Medications.

Last updated September 2, 2026.

Plain-language condition guides: what it likely is, how a doctor would think through it, what treats it, and when it is urgent.

Aminolevulinic Acid: Actinic Keratosis Care, Use, Side Effects

Aminolevulinic acid treats actinic keratoses with photodynamic therapy and helps surgeons see glioma tissue. Avoid light 40 to 48 hours....

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Amphotericin B Lipid Complex: Uses, IV Dosing, Side Effects

Amphotericin B lipid complex (Abelcet) treats invasive fungal infections. Usual dose 5 mg/kg IV once daily, kidney and infusion...

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Ammonium lactate: dry scaly skin, how to use it, side effects

Ammonium lactate 12% treats dry, scaly skin and ichthyosis vulgaris. Apply twice daily, keep it off the face and eyes, use sunscreen....

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Amivantamab-vmjw: lung cancer use, infusion schedule, side effects

Amivantamab-vmjw (Rybrevant) treats EGFR-mutated non-small cell lung cancer by IV infusion. Weight-based dosing, infusion reaction and...

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Aminocaproic Acid: Bleeding Control, Dosing, and Side Effects

Aminocaproic acid slows bleeding caused by excess clot breakdown. Label dosing, the 30 g daily limit, muscle and clot warnings, side...

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Alvimopan: what it treats, how it is given, side effects

Alvimopan speeds bowel recovery after bowel resection surgery. Given in the hospital only, 12 mg twice daily, 15 doses max. Side effects...

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Aluminum/magnesium hydroxide: uses, dosing, side effects

Aluminum hydroxide and magnesium hydroxide relieve heartburn. Check first with kidney disease; diarrhea or constipation can occur....

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Alosetron: severe IBS with diarrhea, dosing, and side effects

Alosetron treats severe diarrhea-predominant IBS in women. Ceiling is 1 mg twice daily, and you stop it for constipation or bloody...

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Sotatercept-csrk: what it treats, how it is given, side effects

Sotatercept-csrk (Winrevair) treats pulmonary arterial hypertension. Target dose 0.7 mg/kg under the skin every 3 weeks with blood...

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Rituximab Injection: Uses, Infusion Schedule, Side Effects

Rituximab injection treats non-Hodgkin lymphoma, CLL, rheumatoid arthritis, GPA, MPA, and pemphigus. Dosing, infusion reaction and...

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Sonidegib: basal cell carcinoma, 200 mg dosing, side effects

Sonidegib (Odomzo) treats locally advanced basal cell carcinoma. One 200 mg capsule daily on an empty stomach, never in pregnancy....

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Sofpironium: treating underarm sweating, how to use it, side effects

Sofpironium (Sofdra) gel treats heavy underarm sweating in people 9 and older. One application per underarm daily at bedtime. Dry mouth,...

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Risperidone injection: what it treats, dosing, and side effects

Risperidone long-acting injection for schizophrenia and bipolar I: how often shots are given, the 50 mg every 2 weeks Consta ceiling,...

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Riociguat: what it treats, how to take it, and side effects

Riociguat (Adempas) treats CTEPH and PAH. Max 2.5 mg three times daily; never with nitrates or PDE-5 drugs or in pregnancy. Headache,...

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Molindone: what it treats, how to take it, side effects

Molindone treats schizophrenia. Learn about the labeled 225 mg daily upper dose, movement side effects, and dementia warning, with...

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Mitoxantrone: what it treats, how it's given, side effects

Mitoxantrone treats certain forms of MS, prostate cancer pain, and leukemia. Learn about heart warnings, dosing limits, and side...

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Mitomycin: what it treats, how to take it, side effects

Mitomycin treats certain stomach, pancreatic, and urinary tract cancers. Specialist dosing and blood monitoring are essential. Side...

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Mirdametinib: what it treats, how to take it, side effects

Mirdametinib treats certain NF1 nerve tumors. Maximum: 4 mg twice daily during treatment days. Learn about rash, diarrhea, and eye...

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Lanthanum: what it treats, how to take it, side effects

Lanthanum lowers high phosphate in kidney failure. Never swallow tablets whole. Learn about dosing, nausea, and bowel warnings, with...

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Lanadelumab-flyo: uses, how to take it, side effects

Lanadelumab-flyo prevents hereditary angioedema attacks. Learn dosing, serious allergy warnings, and common side effects. Sources:...

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Lacosamide injection: uses, dosing, and side effects

Lacosamide injection treats seizures. The usual adult maximum is 400 mg daily; heart rhythm problems are possible. Learn about dizziness...

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Ketorolac nasal spray: uses, dosing, and side effects

Ketorolac nasal spray treats moderate to moderately severe acute pain. Limit all ketorolac use to 5 days. Learn about nasal irritation...

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Ketamine injection: uses, how it's given, side effects

Ketamine injection provides anesthesia for procedures and requires monitored administration. Learn about dosing, confusion, breathing...

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Milsaperidone: what it treats, how to take it, side effects

Milsaperidone treats schizophrenia and bipolar I manic or mixed episodes. Maximum: 24 mg daily. Learn about dizziness, heart rhythm...

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Miglitol: what it treats, how to take it, side effects

Miglitol treats type 2 diabetes. Maximum: 100 mg with each main meal, three times daily. Gas and diarrhea are common. Dosing and safety...

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Amlexanox: canker sore paste, how to use it, side effects

Amlexanox 5% oral paste treats canker sores. Dab 1/4 inch on each ulcer four times a day, stop and call your doctor if it is not healing...

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Amiloride and Hydrochlorothiazide: Uses, Dosing, Side Effects

Amiloride and hydrochlorothiazide treats high blood pressure and swelling. Usual dose is 1 to 2 tablets daily with food, max 2 tablets....

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Aluminum Hydroxide: Heartburn Relief, Dosing, and Side Effects

Aluminum hydroxide is an antacid for heartburn and acid indigestion. Adults take no more than 8 doses in 24 hours. Constipation is...

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Amphetamine: what it treats, how to take it, side effects

Amphetamine treats ADHD and narcolepsy. Most adults stay at or below 40 mg a day of immediate-release tablets. Covers dosing, sleep and...

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Amoxicillin and Clavulanic Acid: uses, dosing, side effects

Amoxicillin and clavulanic acid treats sinus, ear, chest, skin, and urine infections. Usual adult max 875/125 mg twice daily, food...

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Amlodipine and benazepril: uses, dosing, and side effects

Amlodipine and benazepril capsules treat high blood pressure. Max 10 mg/40 mg per day, stop if you become pregnant. Common effects:...

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Aminophylline: what it treats, how to take it, side effects

Aminophylline treats asthma and COPD wheezing. Adults usually stay at or below about 1,100 mg a day with blood level checks; nausea or a...

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Aminolevulinic Acid Topical: Uses, How It Is Applied, Side Effects

Aminolevulinic acid topical treats actinic keratoses and superficial basal cell carcinoma with light therapy. Dosing limits, sun...

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Amikacin: what it treats, how it is given, and side effects

Amikacin injection treats serious gram-negative infections. Usual adult dose is 15 mg/kg a day, not above 1.5 g a day. Side effects,...

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Alteplase: what it treats, how it is given, and side effects

Alteplase (Activase) dissolves clots in acute ischemic stroke, heart attack, and pulmonary embolism. Stroke dose is 0.9 mg/kg up to 90...

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Alitretinoin: what it treats, how to use it, side effects

Alitretinoin gel 0.1% (Panretin) treats skin lesions of AIDS-related Kaposi sarcoma. Apply 2 to 4 times daily; avoid pregnancy and DEET....

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Aminocaproic Acid Injection: What It Treats, Dosing, Side Effects

Aminocaproic acid injection treats bleeding from excess clot breakdown. Usual ceiling is 30 g in 24 hours. Common effects include nausea...

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Amiloride: what it treats, how to take it, and side effects

Amiloride treats fluid buildup and high blood pressure and helps hold on to potassium. Typical dose is 5 to 20 mg a day, never more than...

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Amikacin Inhalation: MAC Lung Infection, How to Use, Side Effects

Amikacin liposome inhalation treats refractory MAC lung disease. One 590 mg vial once daily by Lamira nebulizer, boxed lung warnings,...

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Amantadine: what it treats, how to take it, side effects

Amantadine treats Parkinson's symptoms, drug-induced movement reactions, and levodopa dyskinesia. Usual limit is 400 mg a day, less with...

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Altretamine: ovarian cancer use, dosing, and side effects

Altretamine (Hexalen) treats recurrent ovarian cancer. Usual dose is 260 mg/m2 a day in 4 doses after meals; watch for numbness and low...

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Alpha-1-Proteinase Inhibitor: uses, weekly infusions, side effects

Alpha-1-proteinase inhibitor treats emphysema from severe alpha-1 antitrypsin deficiency. Standard dose is 60 mg/kg IV weekly. Side...

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Almotriptan: migraine relief, how to take it, side effects

Almotriptan treats migraine attacks. Adults take 6.25 mg or 12.5 mg, up to 25 mg in 24 hours. Side effects include nausea, sleepiness,...

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Allopurinol Injection: uric acid control, IV dosing, side effects

Allopurinol injection lowers uric acid during cancer treatment when pills are not an option. Adult dose 200 to 400 mg/m2 daily, 600 mg...

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Aldesleukin: what it treats, how you receive it, side effects

Aldesleukin treats metastatic kidney cancer and melanoma. Hospital dosing requires monitoring for capillary leak; nausea and rash are...

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Alcaftadine: what it treats, how to use it, side effects

Alcaftadine treats allergy eye itching. Use one drop per affected eye daily. Learn about irritation, eye pain warnings, and dosing from...

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Albuterol and Ipratropium: COPD Use, Dosing, and Side Effects

Albuterol and ipratropium inhalation treats COPD. Adults use no more than 6 doses in 24 hours. Side effects include dry mouth, tremor,...

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Albiglutide: what it treats, how to take it, side effects

Albiglutide treated type 2 diabetes but is discontinued in the US. Review weekly dosing, thyroid warnings, nausea and diarrhea, with FDA...

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Agalsidase beta: what it treats, dosing, side effects

Agalsidase beta treats Fabry disease with infusions every 2 weeks. Learn about severe allergic reactions, side effects, and dosing using...

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Aflibercept: what it treats, how it is given, side effects

Aflibercept (Eylea) treats wet AMD, diabetic macular edema, and retinal vein occlusion. Given as an eye injection no more often than...

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Afamitresgene autoleucel: uses, dosing, side effects

Afamitresgene autoleucel treats synovial sarcoma as a single infusion. Learn about cytokine release syndrome, nausea, and other effects....

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Aducanumab-avwa: uses, how it was given, side effects

Aducanumab-avwa treated early Alzheimer's disease. Learn about its withdrawal, infusion dosing, brain swelling warning, and side...

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Amifostine: what it protects, how it is given, side effects

Amifostine (Ethyol) reduces cisplatin kidney damage and radiation dry mouth. Labeled doses are 910 or 200 mg/m2 IV daily; watch for low...

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Ambrisentan: what it treats, how to take it, and side effects

Ambrisentan treats pulmonary arterial hypertension. The ceiling is 10 mg once daily, and it is never used in pregnancy. Covers side...

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Alprostadil urogenital: ED treatment, dosing, and side effects

Alprostadil urogenital treats erectile dysfunction. Urethral and injection dosing limits, why an erection past 4 hours needs emergency...

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Alogliptin: type 2 diabetes use, dosing, and side effects

Alogliptin (Nesina) treats type 2 diabetes. Adult dose is 25 mg once daily, less if kidney function is reduced. Learn side effects,...

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Almotriptan: migraine treatment, dosing, and side effects

Almotriptan treats migraine attacks in adults and teens 12 and up. Usual dose is 6.25 mg or 12.5 mg, max 25 mg in 24 hours. Side...

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Aliskiren: what it treats, how to take it, and side effects

Aliskiren treats high blood pressure. Usual dose is 150 to 300 mg once daily, with 300 mg the ceiling, and it is never used in...

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Aldesleukin: what it treats, how it is given, side effects

Aldesleukin (Proleukin) treats advanced kidney cancer and melanoma. Given as 600,000 IU/kg IV every 8 hours, up to 28 doses per course,...

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Eliglustat: what it treats, how to take it, side effects

Eliglustat treats Gaucher disease type 1. Genetic testing guides dosing; interactions can affect heart rhythm. Side effects include...

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Oriahnn: what it treats, how to take it, side effects

Oriahnn treats heavy periods from fibroids. Learn about its 24-month limit, blood clot warning, dosing, and side effects, with FDA,...

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Eflornithine: what it treats, how to use it, side effects

Eflornithine cream slows unwanted facial hair. Apply twice daily, at least 8 hours apart. Learn about irritation, pregnancy precautions,...

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Efbemalenograstim alfa-vuxw: uses, dosing, side effects

Efbemalenograstim alfa-vuxw reduces infection risk during chemotherapy. Given once per cycle; nausea and blood count changes can occur....

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Edaravone oral: what it treats, how to take it, side effects

Oral edaravone treats ALS. Learn its scheduled 105 mg dose, allergy warning, and side effects, with sources from FDA, DailyMed, and...

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Duvelisib: what it treats, how to take it, side effects

Duvelisib treats CLL and SLL after two prior therapies. Learn dosing, serious infection warnings, and side effects, with DailyMed, FDA,...

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Alirocumab: what it treats, how to inject it, side effects

Alirocumab (Praluent) lowers LDL cholesterol and heart attack risk. Usual dosing is 75 mg or 150 mg every 2 weeks, or 300 mg every 4...

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Alectinib: ALK-positive lung cancer, dosing, and side effects

Alectinib treats ALK-positive non-small cell lung cancer. Adults usually take 600 mg twice daily with food (1200 mg a day). Side...

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Albumin: what it treats, how it is given, side effects

Albumin (human) treats low blood volume, burns, and low albumin from liver or kidney disease. Given by IV, with a usual limit of 250 g...

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Aficamten: treating obstructive HCM, dosing, and side effects

Aficamten treats obstructive hypertrophic cardiomyopathy. Dosing runs 5 mg to 20 mg once daily with echo checks, plus side effects,...

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Adalimumab: what it treats, how to use it, and side effects

Adalimumab (Humira) treats rheumatoid arthritis, Crohn disease, psoriasis and more. Usual adult dose is 40 mg every other week....

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Alemtuzumab: what it treats, how you receive it, side effects

Alemtuzumab treats relapsing MS and B-cell leukemia. Learn about supervised dosing, serious immune reactions, and side effects. Sources:...

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Albuterol: what it treats, how to take it, side effects

Albuterol relieves asthma and COPD symptoms. Learn dosing limits, when to seek help, and side effects such as tremor and racing...

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AHFS® Patient Medication Information: a guide to medicines

AHFS is a medication reference, not a drug. Find medicine uses, dosing warnings, and side effects through MedlinePlus, then check your...

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Afatinib: what it treats, how to take it, side effects

Afatinib treats certain metastatic lung cancers. Learn empty-stomach dosing, severe diarrhea warnings, and common side effects, with...

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Ado-trastuzumab emtansine: HER2 breast cancer, dosing, side effects

Ado-trastuzumab emtansine treats HER2-positive breast cancer. IV infusion of 3.6 mg/kg every 3 weeks, never more per dose. Liver, heart,...

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Adefovir: what it treats, how to take it, side effects

Adefovir treats chronic hepatitis B. Do not exceed 10 mg daily or stop without advice. Learn about kidney risks and side effects, with...

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Adagrasib: what it treats, how to take it, and side effects

Adagrasib (Krazati) treats KRAS G12C-mutated lung and colorectal cancer. Usual adult dose is 600 mg twice daily. Food rules, diarrhea,...

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Acyclovir Topical: Cold Sore Uses, How to Apply, Side Effects

Acyclovir cream and ointment treat cold sores and herpes simplex skin lesions. Cream is applied 5 times a day for 4 days. Side effects,...

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Acyclovir buccal: cold sores, how to take it, side effects

Acyclovir buccal treats recurring cold sores with one 50 mg dose per episode. Avoid with milk protein allergy. Headache and gum pain can...

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Acetylcysteine: what it treats, how to take it, side effects

Inhaled acetylcysteine treats thick lung mucus. Follow your prescribed dose; watch for wheezing. Nausea and throat irritation can occur....

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Acetaminophen Injection: what it treats, dosing, side effects

Acetaminophen injection (IV) treats pain and fever. Adults 50 kg and up: 1000 mg every 6 hours, 4000 mg daily ceiling from all sources....

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Acyclovir ophthalmic: uses, how to apply it, side effects

Acyclovir eye ointment treats herpes keratitis. Use only as prescribed and avoid contacts. Stinging and eye inflammation can occur....

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Acyclovir Injection: What It Treats, IV Dosing, and Side Effects

Acyclovir injection treats serious herpes simplex, shingles, and herpes encephalitis infections. IV dosing limits, kidney and nerve...

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Acoramidis: what it treats, how to take it, side effects

Acoramidis treats ATTR heart muscle disease. Take no more than 1,424 mg daily. Diarrhea and stomach pain can occur. Sources: FDA,...

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Acoltremon: dry eye treatment, how to use it, side effects

Acoltremon treats dry eye disease. Use one drop per eye twice daily; burning or stinging can occur. Dosing and safety information from...

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Aclidinium: what it treats, how to inhale it, side effects

Aclidinium (Tudorza Pressair) treats COPD. One inhalation twice daily, 800 mcg total per day, not for sudden breathing trouble. Covers...

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Acetazolamide: what it treats, how to take it, side effects

Acetazolamide treats glaucoma, altitude sickness, edema, and some seizures. Review kidney warnings, dosing, tingling, and nausea using...

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Acetaminophen rectal: uses, how to take it, side effects

Rectal acetaminophen treats pain and fever. Learn the 650 mg suppository limit, liver warnings, and serious side effects, with DailyMed...

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Aceclidine eye drops: presbyopia use, dosing, and side effects

Aceclidine ophthalmic (VIZZ) treats age-related near vision loss. One drop in each eye once daily, no more. Dim vision, eye redness,...

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Acebutolol: what it treats, how to take it, side effects

Acebutolol treats high blood pressure and certain irregular heartbeats. Do not stop suddenly. Learn dosing, dizziness and other side...

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Acalabrutinib: what it treats, how to take it, side effects

Acalabrutinib treats CLL, SLL, and mantle cell lymphoma. Learn about serious bleeding, twice-daily dosing, and side effects, with FDA,...

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Abrocitinib: what it treats, how to take it, side effects

Abrocitinib (Cibinqo) treats moderate to severe eczema in people 12 and up. Usual dose 100 mg daily, ceiling 200 mg. Infection and clot...

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AbobotulinumtoxinA (Dysport): uses, dosing, and side effects

AbobotulinumtoxinA (Dysport) treats cervical dystonia, spasticity, and frown lines. Adult sessions cap at 1500 Units, at least 12 weeks...

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Abiraterone: what it treats, how to take it, side effects

Abiraterone treats prostate cancer that has spread. Take your prescribed steroid with it. Learn dosing, food rules, and side effects...

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Abemaciclib: what it treats, how to take it, side effects

Abemaciclib treats certain breast cancers. Learn dosing limits, severe diarrhea warnings, and side effects, with sources from DailyMed,...

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Abatacept Injection: What It Treats, Dosing, Side Effects

Abatacept (Orencia) treats rheumatoid arthritis, psoriatic arthritis, and juvenile idiopathic arthritis. Usual adult dose is 125 mg...

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Abaloparatide: osteoporosis treatment, dosing, and side effects

Abaloparatide (Tymlos) treats osteoporosis with high fracture risk. Dose is 80 mcg under the skin once daily, with a 2 year lifetime...

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Abacavir: HIV-1 treatment, dosing, and side effects

Abacavir treats HIV-1 with other antiretrovirals. Adults take 600 mg daily. Dosing, the HLA-B*5701 hypersensitivity warning, side...

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Abacavir/lamivudine/zidovudine: HIV treatment, dosing, side effects

Abacavir, lamivudine, and zidovudine treat HIV. Learn twice daily dosing, serious allergy warnings, and common side effects, with...

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Triumeq: what it treats, how to take it, side effects

Abacavir, dolutegravir, and lamivudine treat HIV. Learn once-daily dosing, allergy screening, and side effects using DailyMed and...

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Acamprosate

Acamprosate (Campral) helps maintain sobriety after quitting alcohol. See the three-a-day...

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Acarbose

Acarbose is a type 2 diabetes pill taken with the first bite of each meal to slow carb digestion. Dosing, gas...

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Acetaminophen

Acetaminophen (Tylenol) relieves mild to moderate pain and reduces fever. See dosing limits, liver warnings,...

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Acetaminophen and Codeine

Acetaminophen and codeine treats moderate pain. Keep total acetaminophen under 4,000 mg a day, skip alcohol, and watch for slowed breathing. Dosing, side effects, and FDA sources.

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Acetaminophen, butalbital, and caffeine

Acetaminophen, butalbital, and caffeine treats tension headache. Do not exceed 6 tablets a day or 4,000 mg acetaminophen. Covers drowsiness, liver risk, and dependence. Sources: FDA, MedlinePlus.

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Acitretin

Acitretin treats severe psoriasis in adults. Pregnancy must be avoided during treatment and for 3 years after. Dosing, alcohol rules, and side effects, with FDA label and MedlinePlus sources.

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Acyclovir

Acyclovir (Zovirax) is an antiviral for shingles, herpes, and chickenpox. See dosing, timing, side...

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Adalimumab

Adalimumab (Humira) is a TNF blocker for autoimmune disease. See infection...

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Adapalene

Adapalene (Differin) is a retinoid acne gel. See the purge weeks, sun warning, how to...

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Adderall

Adderall (amphetamine salts) is a stimulant for ADHD and narcolepsy. See IR vs XR dosing, misuse warnings,...

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Albendazole

Albendazole (Albenza) treats tapeworm infections like neurocysticercosis and hydatid disease, plus common...

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Albuterol

Albuterol is a rescue inhaler for asthma and COPD symptoms like wheezing and shortness of breath. See dosing,...

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Alendronate

Alendronate (Fosamax) treats osteoporosis. See the water-and-upright rule, jaw...

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Alfuzosin

Alfuzosin (Uroxatral) treats enlarged prostate. See the after-meal rule, first-dose...

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Alirocumab

Alirocumab (Praluent) is a PCSK9 injection every 2 weeks, starting at 75 mg, that cuts LDL roughly in half or...

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Allopurinol

Allopurinol (Zyloprim) lowers uric acid to prevent gout attacks. See dosing, the early-flare effect, rash...

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Alprazolam

Alprazolam (Xanax) is a benzodiazepine for anxiety and panic disorder. See dosing, dependence and interaction...

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Amiodarone

Amiodarone (Pacerone) is an antiarrhythmic for serious heart rhythm problems. See the monitoring plan,...

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Amitriptyline

Amitriptyline is a tricyclic antidepressant also used for nerve pain and migraine. See dosing, the...

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Amlodipine

Amlodipine (Norvasc) is a calcium channel blocker for high blood pressure and chest pain. See dosing, ankle...

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Ammonium lactate

Ammonium lactate 12% (Lac-Hydrin, AmLactin) treats very dry, scaly skin and ichthyosis. How to apply it, the...

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Amoxicillin-clavulanate

Amoxicillin-clavulanate (Augmentin) is a penicillin-type antibiotic. See dosing, birth control effect, side...

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Amoxicillin

Amoxicillin is a penicillin-type antibiotic for infections like strep throat and pneumonia. See dosing, side...

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Anastrozole

Anastrozole (Arimidex) is a daily aromatase inhibitor for hormone receptor-positive breast cancer in...

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Apixaban

Apixaban (Eliquis) is a blood thinner for AFib stroke prevention and clots. See dosing, no-INR difference,...

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Apremilast

Apremilast (Otezla) is an oral, non-biologic pill for plaque psoriasis, psoriatic arthritis, and Behcet's...

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Aprepitant

Aprepitant (Emend) prevents chemotherapy nausea and vomiting, taken 125 mg on day 1 then 80 mg on days 2 and...

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Aripiprazole

Aripiprazole (Abilify) treats schizophrenia, bipolar disorder, and more. See dosing and...

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Armodafinil

Armodafinil (Nuvigil) treats excessive sleepiness from narcolepsy, apnea, shift...

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Aspirin

Aspirin relieves pain and fever and, at low daily doses, helps prevent heart attack and stroke. See dosing,...

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Atenolol

Atenolol (Tenormin) is a beta blocker for blood pressure, angina, and heart attack recovery. See side...

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Atogepant

Atogepant (Qulipta) prevents migraines - one tablet daily. See effects, what to...

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Atomoxetine

Atomoxetine (Strattera) is a non-stimulant ADHD medication. See dosing, the child suicide-risk warning, liver...

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Atorvastatin

Atorvastatin (Lipitor) is a statin that lowers cholesterol and cuts heart attack and stroke risk. See dosing,...

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Avanafil

Avanafil (Stendra) is the fastest-acting ED pill, taken as little as 15 minutes before sex. Dosing, the...

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Azathioprine

Azathioprine (Imuran) is an immunosuppressant for transplant and RA. See...

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Azelaic acid

Azelaic acid (Finacea) treats rosacea bumps and acne. See application steps, effects,...

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Azelastine nasal spray

Azelastine nasal spray treats allergy congestion and sneezing at the source. See...

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Azithromycin

Azithromycin (Z-pak) is a macrolide antibiotic for infections like pneumonia and sinusitis. See dosing, side...

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Baclofen

Baclofen treats muscle spasticity from MS and spinal cord conditions. See withdrawal...

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Baloxavir

Baloxavir (Xofluza) is a one-dose flu treatment. See the 2-day window, dairy...

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Bempedoic acid

Bempedoic acid (Nexletol) lowers LDL - the non-statin option. See tendon, gout...

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Benazepril

Benazepril (Lotensin) is an ACE inhibitor for blood pressure. See cough, pregnancy...

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Benzonatate

Benzonatate (Tessalon) is a prescription cough suppressant. See the swallow-whole rule, overdose risk, side...

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Benzoyl peroxide

Benzoyl peroxide treats mild to moderate acne. See the test-patch start, bleach warning,...

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Benztropine

Benztropine treats Parkinson's symptoms and drug-induced tremors. See the...

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Betamethasone cream

Betamethasone dipropionate cream is a medium-potency prescription steroid for inflamed, itchy skin in...

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Biktarvy

Biktarvy treats HIV in one daily tablet. See the hepatitis B warning, what to...

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Bimatoprost

Bimatoprost (Lumigan) is a once-nightly prostaglandin drop for glaucoma. Why evening dosing, the eye-color...

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Biotin

Biotin (vitamin B7): the hair-and-nails supplement - what the evidence actually...

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Bisacodyl

Bisacodyl (Dulcolax) is a short-term stimulant laxative. See the one-week limit, dairy...

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Bismuth subsalicylate

Bismuth subsalicylate (Pepto-Bismol) treats diarrhea, heartburn, and upset stomach. See dosing, the Reye's...

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Bisoprolol

Bisoprolol is a beta blocker for high blood pressure. See dosing, the no-sudden-stop rule,...

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Boric acid suppositories

Boric acid vaginal suppositories treat recurrent yeast infections and BV. Vaginal use only, the pregnancy...

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Bowel prep solutions

Bowel prep solutions (Suprep and similar) clean the colon before colonoscopy with a split two-dose regimen....

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Breo Ellipta

Breo Ellipta (fluticasone/vilanterol) is a once-daily inhaled steroid plus LABA for COPD and asthma. One...

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Brexpiprazole

Brexpiprazole (Rexulti) treats schizophrenia and adds on for depression. See...

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Brimonidine eye drops

Brimonidine (Alphagan) eye drops lower eye pressure in glaucoma, one drop three times daily. The drowsiness...

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Brimonidine gel

Brimonidine gel (Mirvaso) shrinks persistent facial redness from rosacea for up to 12 hours a day. The...

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Budesonide-formoterol

Budesonide-formoterol (Symbicort) controls asthma and COPD. See dosing, the rinse rule,...

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Budesonide oral

Oral budesonide (Entocort EC, Uceris, Tarpeyo) treats Crohn's, colitis. See...

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Bumetanide

Bumetanide is a strong water pill for fluid overload. See dehydration, hearing...

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Buprenorphine-naloxone

Buprenorphine-naloxone (Suboxone) treats opioid dependence. See how it works,...

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Bupropion

Bupropion (Wellbutrin) treats depression and seasonal affective disorder and helps people quit smoking. See...

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Buspirone

Buspirone is a non-benzo anxiety medication taken twice daily. See dosing, why it takes weeks, grapefruit...

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Calcipotriene

Calcipotriene (Dovonex) is a vitamin D3 cream for psoriasis. See the 8-week...

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Canagliflozin

Canagliflozin (Invokana) is an SGLT2 inhibitor for type 2 diabetes. See warnings, dosing,...

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Candesartan

Candesartan (Atacand) is an ARB for blood pressure and heart failure. See pregnancy...

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Carbamazepine

Carbamazepine (Tegretol) treats seizures, nerve pain, and bipolar mania. See warnings,...

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Carbidopa-levodopa

Carbidopa-levodopa (Sinemet) treats Parkinson's symptoms. See wearing-off,...

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Cariprazine

Cariprazine (Vraylar) treats schizophrenia, bipolar, and depression. See...

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Carisoprodol

Carisoprodol (Soma) is a short-term muscle relaxant. See the 3-week limit and...

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Carvedilol

Carvedilol (Coreg) is a beta blocker for heart failure and high blood pressure. See dosing with food, heart...

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Cefdinir

Cefdinir (Omnicef) is a cephalosporin antibiotic. See dosing, the red-stool effect, birth control...

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Cefixime

Cefixime (Suprax) is a cephalosporin antibiotic for bacterial infections. See...

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Cefpodoxime

Cefpodoxime is a cephalosporin for bronchitis, pneumonia, UTI, gonorrhea. See...

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Cefuroxime

Cefuroxime (Ceftin) is a cephalosporin antibiotic for infections and Lyme disease. See dosing,...

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Celecoxib

Celecoxib (Celebrex) is a COX-2 inhibitor for arthritis and pain. See dosing, sulfa...

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Cephalexin

Cephalexin (Keflex) is a cephalosporin antibiotic for bacterial infections. See dosing, side effects, and...

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Cetirizine

Cetirizine (Zyrtec) is a once-daily antihistamine for allergies and hives. See dosing, drowsiness, alcohol...

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Chlorthalidone

Chlorthalidone is a thiazide water pill for blood pressure. See the morning-dose reason,...

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Cholestyramine

Cholestyramine (Questran) is a bile-acid powder that lowers cholesterol. See mixing,...

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Ciclesonide inhaler

Ciclesonide (Alvesco) is a daily steroid inhaler for asthma prevention. See...

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Ciclopirox

Ciclopirox treats nail fungus and skin fungal infections. See the long nail...

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Cilostazol

Cilostazol helps leg pain from poor circulation (claudication). See the heart...

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Cimetidine

Cimetidine (Tagamet) is an H2 blocker for ulcers, GERD, and heartburn. See the 2-week...

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Cinacalcet

Cinacalcet (Sensipar) lowers parathyroid hormone on dialysis. Take with food,...

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Ciprofloxacin

Ciprofloxacin (Cipro) is a fluoroquinolone antibiotic for serious bacterial infections. See dosing, boxed...

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Citalopram

Citalopram (Celexa) is an SSRI for depression. See dosing, the 40 mg heart-rhythm cap, and side...

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Clarithromycin

Clarithromycin is a macrolide antibiotic for bacterial infections. See interactions,...

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Clindamycin

Clindamycin is an antibiotic for bacterial infections. See the diarrhea warning, dosing rules, side...

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Clobetasol

Clobetasol is a super-potent steroid for psoriasis and eczema. See the 2-week rule,...

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Clomiphene

Clomiphene (Clomid) induces ovulation for infertility. See cycle timing, vision effects,...

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Clomipramine

Clomipramine (Anafranil) is a tricyclic for OCD. See the boxed warning, dosing, side...

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Clonazepam

Clonazepam (Klonopin) is a benzodiazepine for seizures and panic disorder. See dosing, dependence and...

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Clonidine

Clonidine (Catapres) treats high blood pressure and ADHD. See the never-stop-suddenly rule and side...

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Clopidogrel

Clopidogrel (Plavix) is an antiplatelet that prevents repeat heart attacks and strokes. See dosing, bleeding...

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Clotrimazole-betamethasone cream

Clotrimazole-betamethasone (Lotrisone) combines an antifungal with a steroid for ringworm and jock itch....

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Clotrimazole cream

Clotrimazole cream (Lotrimin AF) treats athlete's foot, jock itch, and ringworm. See how to apply it, how...

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Clozapine

Clozapine is the most effective antipsychotic for treatment-resistant schizophrenia, with mandatory blood...

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Codeine

Codeine treats pain and cough. Opioid - children warning, naloxone plan, rules...

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Colchicine

Colchicine (Colcrys) prevents and treats gout attacks and treats FMF. See flare dosing, grapefruit rule, side...

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Colesevelam

Colesevelam (Welchol) is a bile acid resin for LDL cholesterol and type 2 diabetes. Dosing with meals, the...

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The combined pill

The combined birth control pill contains estrogen and progestin, taken daily. How it works, who should not...

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Contraceptive implant

The etonogestrel implant (Nexplanon) prevents pregnancy for up to 5 years. See how it...

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Contraceptive patch

The contraceptive patch (Xulane) is weekly combination birth control. See rules,...

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Contraceptive vaginal ring

The contraceptive ring (NuvaRing, Annovera) is monthly combination birth control. See...

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Contrave

Contrave combines naltrexone and bupropion for weight management, ramping to two tablets twice daily. The...

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Copper IUD (Paragard)

Paragard, the copper IUD, is hormone-free birth control that lasts up to 10 years and works as emergency...

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CoQ10

Coenzyme Q10: what the evidence actually supports, safety, and the warfarin...

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Cranberry supplements

Cranberry for UTI prevention: it may cut recurrence for some women. It never treats...

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Cyanocobalamin (B12)

Cyanocobalamin (vitamin B12) treats and prevents B12 deficiency. See who needs...

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Cyclobenzaprine

Cyclobenzaprine (Flexeril) is a muscle relaxant for short-term muscle spasms. See dosing, the 3-week limit,...

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Cyclosporine eye drops

Cyclosporine eye drops (Restasis) increase tear production in dry eye disease. See...

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Cyclosporine

Cyclosporine (Neoral, Sandimmune) prevents transplant rejection and treats severe psoriasis and RA. The...

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Cyproheptadine

Cyproheptadine is an older antihistamine for allergies, also used off-label for appetite and migraines....

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Dabigatran

Dabigatran (Pradaxa) is a blood thinner for AFib and clots. See the never-stop rule,...

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Dapagliflozin

Dapagliflozin (Farxiga) lowers blood sugar and protects heart and kidneys. See the UTI...

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Dapsone gel

Dapsone gel (Aczone) is a once-daily acne treatment, especially for adult women's inflammatory acne. G6PD...

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Denosumab

Denosumab (Prolia) is a twice-yearly injection for osteoporosis. See calcium, jaw, stop...

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Descovy

Descovy (emtricitabine/tenofovir AF) treats HIV and prevents it as PrEP. See...

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Desmopressin

Desmopressin (DDAVP) treats water diabetes and bed-wetting. See the fluid...

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Desonide

Desonide is a low-potency prescription steroid cream for eczema and rashes, gentle enough for sensitive skin....

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Desvenlafaxine

Desvenlafaxine (Pristiq) is an SNRI for depression. See the boxed warning, dosing, side...

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Dexamethasone

Dexamethasone is a corticosteroid for inflammation, allergies, and more. See taper rules, side...

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Dexlansoprazole (Dexilant)

Dexlansoprazole (Dexilant) is a dual-release PPI for erosive esophagitis and GERD, one capsule daily. How its...

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Dexmethylphenidate

Dexmethylphenidate (Focalin) is a stimulant for ADHD. See dosing, dependence...

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Dextromethorphan

Dextromethorphan (Robitussin, Delsym) is a cough suppressant. See dosing, the MAOI warning, side effects, and...

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Diazepam

Diazepam (Valium) treats anxiety, spasms, seizures, alcohol withdrawal. See dependence...

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Diclegis

Diclegis (doxylamine + vitamin B6) is the FDA-approved prescription for morning sickness that diet changes...

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Diclofenac gel (Voltaren)

Diclofenac gel (Voltaren) is a topical NSAID for osteoarthritis pain in knees, hands, and other joints,...

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Diclofenac

Diclofenac treats arthritis pain and inflammation. See the heart and stomach warnings,...

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Dicyclomine

Dicyclomine (Bentyl) calms IBS gut spasms. See the heat warning, who should avoid it,...

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Digoxin

Digoxin (Lanoxin) treats heart failure and abnormal heart rhythms. See the same-brand rule, pulse checks,...

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Diltiazem

Diltiazem (Cardizem) is a calcium channel blocker for blood pressure and angina. See dosing forms, heart...

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Dimenhydrinate

Dimenhydrinate (Dramamine) prevents motion sickness. See timing, drowsiness,...

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Diphenhydramine

Diphenhydramine (Benadryl) treats allergies and colds. See sedation, age limits, who avoids...

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Diphenoxylate-atropine (Lomotil)

Lomotil (diphenoxylate with atropine) is a prescription antidiarrheal for adults. Dosing, the 48-hour rule,...

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Disulfiram

Disulfiram (Antabuse) makes drinking alcohol physically punishing. See the hidden-alcohol...

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Docusate

Docusate (Colace) is a stool softener for occasional constipation and straining. See dosing, the 1-week...

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Dofetilide

Dofetilide (Tikosyn) treats irregular heartbeat - started in a hospital. See...

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Dolasetron

Dolasetron (Anzemet) prevents nausea and vomiting from chemotherapy and surgery. Usual adult dose is one 100 mg tablet, plus the heart rhythm warning, side effects, and label sources.

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Dolutegravir

Dolutegravir (Tivicay) treats HIV. See the rash rule and interaction...

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Donepezil

Donepezil (Aricept) treats Alzheimer's dementia symptoms. See what it can and cannot do,...

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Doxazosin

Doxazosin (Cardura) treats enlarged prostate and high blood pressure. See the first-dose...

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Doxepin

Doxepin (Sinequan) is a tricyclic antidepressant for depression and anxiety. See...

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Doxycycline

Doxycycline is a tetracycline antibiotic for infections, acne, and malaria prevention. See dosing, sun...

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Doxylamine

Doxylamine (Unisom) is an antihistamine sleep aid. See the 2-week rule, next-day...

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Dronabinol

Dronabinol (Marinol) treats chemo nausea and AIDS appetite loss. See the...

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Dronedarone

Dronedarone (Multaq) is an antiarrhythmic for intermittent atrial fibrillation, 400 mg twice daily with...

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Drospirenone (Slynd)

Drospirenone (Slynd) is an estrogen-free progestin-only birth control pill with a 24-hour missed-pill window....

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Dulaglutide

Dulaglutide (Trulicity) is a weekly injection for type 2 diabetes. See dosing, warnings,...

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Duloxetine

Duloxetine (Cymbalta) is an SNRI for depression, anxiety, and nerve pain. See dosing, withdrawal warnings,...

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Dupilumab

Dupilumab (Dupixent) treats eczema, asthma, nasal polyps. See the eye...

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Dutasteride

Dutasteride (Avodart) shrinks an enlarged prostate. See the handling rules, timeline,...

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Dymista

Dymista combines an antihistamine and a steroid in one nasal spray, twice daily for seasonal allergies from...

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Edoxaban

Edoxaban (Savaysa) is a once-daily blood thinner for atrial fibrillation and DVT/PE. The kidney-function...

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Elagolix

Elagolix (Orilissa) treats moderate to severe endometriosis pain. The two dosing schedules, bone-loss time...

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Eletriptan

Eletriptan (Relpax) stops migraine attacks. See the redose rule, interaction...

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Eluxadoline

Eluxadoline (Viberzi) treats IBS with diarrhea. See the stomach-pain...

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Empagliflozin

Empagliflozin (Jardiance) is an SGLT2 inhibitor for type 2 diabetes, heart failure, and kidney protection....

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Enalapril

Enalapril (Vasotec) is an ACE inhibitor for blood pressure and heart failure. See cough,...

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Enoxaparin

Enoxaparin (Lovenox) is an injectable blood thinner for DVT and heart events. See...

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Epclusa

Epclusa (sofosbuvir/velpatasvir) treats all six hepatitis C genotypes in 12 weeks, curing most patients....

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Epinephrine auto-injector

Epinephrine auto-injectors (EpiPen) stop severe allergic reactions. See when, how, and...

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Eplerenone

Eplerenone (Inspra) treats blood pressure and post-heart-attack recovery. See potassium...

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Epoetin alfa

Epoetin alfa (Epogen, Procrit) treats anemia. Injection - clot warning, lab...

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Erenumab

Erenumab (Aimovig) is a monthly self-injection to prevent migraine. See how it...

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Ergocalciferol

Ergocalciferol (vitamin D2, Drisdol) treats vitamin D deficiency and related bone conditions. Prescription...

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Erythromycin

Erythromycin is a macrolide antibiotic for ear, lung, skin, throat infections. See...

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Escitalopram

Escitalopram (Lexapro) is an SSRI for depression and generalized anxiety disorder. See dosing, side effects,...

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Esketamine

Esketamine (Spravato) for treatment-resistant depression: clinic-only, monitored. How it...

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Esomeprazole

Esomeprazole (Nexium) is a PPI for GERD and heartburn, OTC and prescription. See the 14-day rule, clopidogrel...

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Estradiol

Estradiol is estrogen therapy for menopause symptoms and more. See the warnings, dosing,...

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Eszopiclone

Eszopiclone (Lunesta) treats insomnia. See the sleep-behavior warning, dosing, side...

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Etanercept

Etanercept (Enbrel) is a TNF blocker for arthritis and psoriasis. See infection...

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Etodolac

Etodolac is an NSAID for arthritis and pain. See the heart and stomach...

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Evenity (romosozumab)

Evenity (romosozumab) builds new bone in severe osteoporosis with 12 monthly injections, then hands off to...

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Evolocumab

Evolocumab (Repatha) is a PCSK9 injection every 2 weeks or monthly that cuts LDL cholesterol by about 60%....

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Excedrin

Excedrin combines acetaminophen, aspirin, and caffeine for migraine and headache. The 2-caplet limit, the...

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Ezetimibe

Ezetimibe (Zetia) blocks cholesterol absorption in the gut. See solo vs with-statin use,...

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Famciclovir

Famciclovir (Famvir) treats shingles and herpes outbreaks. See the timing...

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Famotidine

Famotidine (Pepcid) is an H2 blocker for heartburn, ulcers, and GERD. See OTC vs prescription dosing, side...

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Febuxostat

Febuxostat (Uloric) lowers uric acid to prevent gout attacks. See the heart...

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Felodipine

Felodipine (Plendil) is a calcium channel blocker for blood pressure. See gum care...

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Fenofibrate

Fenofibrate lowers cholesterol and triglycerides. See muscle, gallbladder, clot...

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Fentanyl patch

Fentanyl patches treat severe ongoing pain. Powerful opioid - the safety rules...

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Ferrous sulfate

Ferrous sulfate treats and prevents iron-deficiency anemia. See absorption rules,...

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Fexofenadine

Fexofenadine (Allegra) is a non-drowsy antihistamine for allergies. See the juice...

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Fezolinetant

Fezolinetant (Veozah) treats menopause hot flashes without hormones. See liver...

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Fidaxomicin

Fidaxomicin (Dificid) treats C. difficile diarrhea. See course rules,...

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Finasteride

Finasteride (Proscar, Propecia) treats enlarged prostate and male hair loss. See dosing, sexual side effects,...

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Finerenone

Finerenone (Kerendia) protects kidneys and heart in type 2 diabetes CKD. See...

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Fish oil (omega-3)

Omega-3 fish oil lowers very high triglycerides with diet changes. See the...

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Flecainide

Flecainide (Tambocor) prevents life-threatening irregular heartbeats. See the monitored...

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Flibanserin

Flibanserin (Addyi) treats low sexual desire disorder (HSDD) in women under 65. The bedtime dose, the alcohol...

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Flovent (fluticasone inhalation)

Flovent HFA (fluticasone) is a twice-daily inhaled steroid for asthma from age 4 up. Priming the inhaler,...

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Fluconazole

Fluconazole (Diflucan) is an antifungal, often a single 150 mg dose for yeast infections. See dosing, side...

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Fludrocortisone

Fludrocortisone is a corticosteroid for Addison's - it holds sodium and fluid....

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Fluocinonide

Fluocinonide is a high-potency prescription steroid for stubborn eczema and psoriasis plaques. How to apply...

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Fluorouracil cream

Fluorouracil cream (Efudex) treats actinic keratoses and superficial basal cell skin cancers. The 2-4 week...

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Fluoxetine

Fluoxetine (Prozac) is an SSRI for depression, OCD, panic attacks, and more. See dosing, the 5-week MAOI...

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Fluticasone-salmeterol

Fluticasone-salmeterol (Advair) controls asthma and COPD. See dosing, the rinse rule,...

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Fluticasone nasal spray

Fluticasone nasal spray (Flonase) is a corticosteroid for allergy symptoms like sneezing and a stuffy nose....

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Fluvoxamine

Fluvoxamine is an SSRI for OCD and social anxiety. See the boxed warning, dosing, side...

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Folic acid

Folic acid is the B vitamin that prevents major birth defects of the brain and...

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Fosfomycin

Fosfomycin (Monurol) is a single-dose antibiotic for bladder infections. See how to...

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Fremanezumab

Fremanezumab (Ajovy) is a monthly or quarterly injection to prevent...

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Frovatriptan

Frovatriptan (Frova) treats migraine attacks - the long-acting triptan. See...

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Furosemide

Furosemide (Lasix) is a diuretic (water pill) for edema and high blood pressure. See dosing, potassium...

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Gabapentin

Gabapentin (Neurontin) treats seizures and nerve pain after shingles. See dosing, the mood-change warning,...

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Galantamine

Galantamine treats Alzheimer's symptoms. See dosing with food and the water...

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Galcanezumab

Galcanezumab (Emgality) is a monthly injection to prevent migraine; also for cluster...

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Gaviscon

Gaviscon is an OTC antacid that forms a floating raft over stomach contents, relieving heartburn after meals....

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Gemfibrozil

Gemfibrozil (Lopid) lowers triglycerides and cholesterol. See the timing and muscle...

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Gemtesa (vibegron)

Gemtesa (vibegron) is a once-daily beta-3 agonist for overactive bladder, 75 mg, without anticholinergic dry...

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Glimepiride

Glimepiride (Amaryl) lowers blood sugar in type 2 diabetes. See low-sugar rules, dosing,...

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Glipizide

Glipizide (Glucotrol) is a sulfonylurea for type 2 diabetes. See dosing, low blood sugar signs, alcohol and...

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Glucagon

Glucagon injection treats severe hypoglycemia. Learn it before you need it. Steps...

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Glyburide

Glyburide (DiaBeta) is a sulfonylurea for type 2 diabetes. See the low-blood-sugar...

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Goserelin Implant

Goserelin implant treats prostate cancer, breast cancer, and endometriosis. One implant every 28 days or 12 weeks, 6 months max for endometriosis. Side effects, warnings, and sources.

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Granisetron

Granisetron prevents nausea and vomiting from chemotherapy and radiation. How the tablet is dosed, common...

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Griseofulvin

Griseofulvin treats ringworm, scalp, and nail fungus. See the long-course rule,...

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Guaifenesin

Guaifenesin (Mucinex) is an expectorant that thins mucus to relieve chest congestion. See dosing, side...

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Guanfacine

Guanfacine (Intuniv, Tenex) treats ADHD in children and high blood pressure. See dosing, the two-brand rule,...

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Haloperidol

Haloperidol (Haldol) treats psychotic disorders and Tourette's tics. See movement...

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Heparin

Heparin prevents and treats blood clots. Injection - dosing, monitoring, and bleed...

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Hydralazine

Hydralazine is a vasodilator for high blood pressure. See dosing, lupus-like warning,...

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Hydrochlorothiazide

Hydrochlorothiazide (HCTZ) is a water pill for blood pressure and fluid retention. See dosing, electrolyte...

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Hydrocodone-acetaminophen

Hydrocodone-acetaminophen treats severe pain. See the breathing risk, Tylenol ceiling,...

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Hydrocodone

Hydrocodone combination products treat short-term moderate to severe pain. Learn dosing limits, the 4,000 mg daily acetaminophen ceiling, side effects, and sources from MedlinePlus and DailyMed.

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Hydrocortisone cream

Hydrocortisone cream 1% (Cortizone-10) relieves itching from eczema, insect bites, and rashes. See how to use...

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Hydromorphone

Hydromorphone (Dilaudid) treats severe pain. Potent opioid - the safety rules...

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Hydroquinone

Hydroquinone 4% cream fades melasma, dark spots, and hyperpigmentation, used twice daily for limited courses....

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Hydroxychloroquine

Hydroxychloroquine (Plaquenil) treats lupus, rheumatoid arthritis, and malaria. See dosing, eye exams, side...

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Hydroxyurea

Hydroxyurea (Hydrea, Droxia, Siklos) treats sickle cell disease and some blood cancers. Daily dosing,...

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Hydroxyzine

Hydroxyzine (Vistaril) is an antihistamine for itching, anxiety, and sedation before surgery. See dosing,...

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Hyoscyamine

Hyoscyamine (Levsin) is an antispasmodic for IBS cramping, GI spasms, and bladder spasms, taken before meals....

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Ibandronate

Ibandronate (Boniva) is a once-monthly bisphosphonate pill for postmenopausal osteoporosis. The 60-minute...

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Ibuprofen

Ibuprofen is an NSAID for pain, fever, and inflammation, sold over the counter and by prescription. See...

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Icosapent ethyl

Icosapent ethyl (Vascepa) lowers triglycerides and heart-attack risk. See...

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Imiquimod cream

Imiquimod cream (Aldara) treats actinic keratoses, superficial BCC, and genital...

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Inclisiran

Inclisiran (Leqvio) is an siRNA cholesterol injection given just twice a year after two loading doses,...

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Indomethacin

Indomethacin (Indocin) is a strong NSAID for arthritis and gout attacks. See dosing and...

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Insulin 70/30

Insulin 70/30 (Novolin 70/30, Humulin 70/30) mixes intermediate and regular insulin in one shot. How it is...

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Insulin aspart

Insulin aspart (NovoLog) is a rapid-acting mealtime insulin. See timing, low-sugar rules,...

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Insulin degludec

Insulin degludec (Tresiba) is a once-daily long-acting insulin. See dosing, low-sugar rules,...

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Insulin glargine

Insulin glargine (Lantus) is a once-daily long-acting insulin for type 1 and type 2 diabetes. See injection,...

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Insulin lispro

Insulin lispro (Humalog) is rapid-acting mealtime insulin. See timing, low-sugar rules,...

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Insulin NPH

Insulin NPH (Humulin N, Novolin N) is intermediate-acting insulin. See mixing, timing,...

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Regular insulin

Regular insulin (Humulin R, Novolin R) is a short-acting mealtime insulin for type 1 and type 2 diabetes....

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Irbesartan

Irbesartan (Avapro) is an ARB for blood pressure and diabetic kidney disease. See dosing, pregnancy warning,...

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Isosorbide mononitrate

Isosorbide mononitrate prevents angina. See dosing schedules, headache meaning,...

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Isotretinoin

Isotretinoin treats severe nodular acne. See iPLEDGE rules, the birth defect warning, side...

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Itraconazole

Itraconazole (Sporanox) treats fungal infections. See the heart warning, food...

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Ivabradine

Ivabradine (Corlanor) slows the heart rate in certain heart-failure patients without lowering blood pressure....

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Ivermectin cream

Ivermectin cream (Soolantra) treats the bumps and pimples of rosacea, applied once daily. Why it takes weeks,...

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Ivermectin

Ivermectin tablets treat parasitic worm infections. See what it is actually for, dosing,...

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Ketoconazole shampoo

Ketoconazole shampoo (Nizoral) treats dandruff and tinea versicolor. See how to use...

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Ketoconazole topical

Ketoconazole cream and shampoo treat fungal skin infections and dandruff. See courses,...

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Ketorolac

Ketorolac is a strong NSAID for short-term pain, max 5 days. See the warnings, dosing,...

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Labetalol

Labetalol is a beta blocker for high blood pressure. See dosing, the liver warning list, side...

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Lacosamide

Lacosamide (Vimpat) controls seizures. See the heart and mood warnings, what to...

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Lactulose

Lactulose treats constipation and lowers ammonia in liver disease. See dosing, taste tips,...

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Lamotrigine

Lamotrigine (Lamictal) treats seizures and bipolar I disorder. See the slow titration, the rash warning, and...

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Lansoprazole

Lansoprazole (Prevacid) is a PPI for GERD, ulcers, and heartburn. See dosing, long-term...

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Latanoprost

Latanoprost (Xalatan) eye drops lower eye pressure in glaucoma. See evening dosing,...

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Leflunomide

Leflunomide (Arava) treats rheumatoid arthritis. See liver, pregnancy, 2-year...

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Lemborexant

Lemborexant (Dayvigo) treats insomnia - falling and staying asleep. See effects,...

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Letrozole

Letrozole (Femara) treats hormone-sensitive breast cancer after menopause. See...

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Levalbuterol

Levalbuterol (Xopenex) is a rescue bronchodilator for asthma and COPD, used by nebulizer or inhaler. Dosing,...

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Levetiracetam

Levetiracetam (Keppra) controls seizures in adults and children. See dosing, mood-change warnings, and side...

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Levocetirizine

Levocetirizine (Xyzal) is a once-daily evening antihistamine for allergies. See dosing,...

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Levofloxacin

Levofloxacin is a fluoroquinolone antibiotic for serious infections. See tendon, nerve, and mood...

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Levonorgestrel emergency contraception

Levonorgestrel emergency contraception (Plan B One-Step) prevents pregnancy after unprotected...

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Levonorgestrel IUD

The levonorgestrel IUD (Mirena, Liletta, Kyleena, Skyla) prevents pregnancy for up to 8 years and lightens...

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Levothyroxine

Levothyroxine (Synthroid) replaces thyroid hormone in hypothyroidism. See how to take it, what blocks...

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Lidocaine patch

The lidocaine patch (Lidoderm) treats post-shingles nerve pain. See the 12-hour rule and...

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Linaclotide

Linaclotide (Linzess) treats IBS with constipation. See the before-breakfast rule,...

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Linagliptin

Linagliptin (Tradjenta) is a DPP-4 inhibitor for type 2 diabetes. See dosing, warnings,...

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Linezolid

Linezolid (Zyvox) treats serious bacterial infections. See food and interaction...

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Liothyronine

Liothyronine (Cytomel) is the T3 thyroid hormone for hypothyroidism. See dosing,...

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Liraglutide

Liraglutide (Victoza) is a daily injection for type 2 diabetes. See dosing, warnings, side...

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Lisdexamfetamine

Lisdexamfetamine (Vyvanse) is a stimulant for ADHD and binge eating disorder. See dosing, heart warnings, and...

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Lisinopril

Lisinopril is an ACE inhibitor for high blood pressure, heart failure, and heart attack recovery. See dosing,...

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Lithium

Lithium treats and prevents bipolar mania. See dosing, blood tests, toxicity signs, and diet...

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Loperamide

Loperamide (Imodium) controls diarrhea, including travelers' diarrhea. See dosing, when NOT to take it, and...

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Loratadine

Loratadine (Claritin) is a once-daily antihistamine for allergy symptoms. See dosing, side effects, and...

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Lorazepam

Lorazepam (Ativan) is a benzodiazepine for anxiety and insomnia. See dosing, dependence and withdrawal...

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Losartan

Losartan (Cozaar) is an ARB for high blood pressure and diabetic kidney protection. See dosing, the pregnancy...

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Lubiprostone

Lubiprostone (Amitiza) treats chronic constipation and IBS-C. See dosing, effects,...

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Lumateperone

Lumateperone (Caplyta) treats schizophrenia, bipolar depression, and adjunctive major depression, one 42 mg...

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Lurasidone

Lurasidone (Latuda) treats schizophrenia and bipolar depression. See the food rule,...

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Magnesium citrate

Magnesium citrate is an over-the-counter saline laxative for occasional constipation. Dosing, the kidney...

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Mebendazole

Mebendazole (Emverm, Vermox) is a chewable deworming tablet for pinworm, roundworm, whipworm, and hookworm....

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Meclizine

Meclizine (Antivert, Bonine) prevents motion sickness and treats dizziness. See timing and...

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Medroxyprogesterone

Medroxyprogesterone (Provera) treats irregular periods and protects the uterine lining. See...

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Meloxicam

Meloxicam (Mobic) is a once-daily NSAID for osteoarthritis and rheumatoid arthritis. See dosing, heart and...

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Memantine

Memantine (Namenda) treats Alzheimer's symptoms. See what it can and cannot do, dosing,...

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Mesalamine

Mesalamine (Lialda, Apriso) treats ulcerative colitis and maintains remission. See...

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Metformin

Metformin is a first-line medication for type 2 diabetes. See dosing with meals, stomach side effects, lactic...

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Methadone

Methadone treats opioid use disorder through certified programs and severe pain in specific cases. Dosing...

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Methenamine

Methenamine prevents recurring urinary tract infections long-term. See how it...

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Methimazole

Methimazole (Tapazole) treats hyperthyroidism. See the sore-throat warning,...

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Methocarbamol

Methocarbamol (Robaxin) is a muscle relaxant for strains and sprains. See the urine-color...

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Methotrexate

Methotrexate treats rheumatoid arthritis, psoriasis, and some cancers. See the weekly-dosing rule,...

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Methyldopa

Methyldopa treats high blood pressure - the long-standing choice in pregnancy. See...

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Methylphenidate

Methylphenidate (Ritalin, Concerta) is a stimulant for ADHD and narcolepsy. See dosing, growth and heart...

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Methylprednisolone

Methylprednisolone (Medrol) is a corticosteroid for inflammation. See taper rules,...

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Metoclopramide

Metoclopramide (Reglan) speeds stomach emptying for GERD and gastroparesis. See the TD...

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Metoprolol

Metoprolol (Lopressor, Toprol-XL) is a beta blocker for blood pressure, angina, and heart failure. See dosing...

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Metronidazole gel

Metronidazole gel (MetroGel) is the classic once-daily topical for rosacea bumps and redness. How to apply...

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Metronidazole

Metronidazole (Flagyl) treats bacterial and parasitic infections. See the alcohol rule, dosing, side...

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Miconazole vaginal

Miconazole vaginal (Monistat 1, 3, 7) treats yeast infections. See how the courses differ, how to apply it,...

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Midodrine

Midodrine treats severe low blood pressure on standing. Daytime-only dosing, BP...

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Minocycline

Minocycline (Minocin) treats infections and acne. See sun, birth-control, color...

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Minoxidil

Minoxidil grows hair as an OTC scalp treatment (Rogaine) and, off-label, as a low-dose oral pill. Realistic...

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Mirabegron

Mirabegron (Myrbetriq) treats overactive bladder without the drying effects. See...

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Mirtazapine

Mirtazapine (Remeron) is an antidepressant taken at bedtime, known for sedation and appetite gain. See dosing...

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Misoprostol

Misoprostol (Cytotec) prevents NSAID-caused stomach ulcers. See dosing, pregnancy...

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Modafinil

Modafinil (Provigil) promotes wakefulness in narcolepsy and shift work. See warnings,...

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Mometasone cream

Mometasone furoate cream (Elocon) is a once-daily prescription steroid for eczema and psoriasis, approved for...

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Mometasone nasal spray

Mometasone nasal spray (Nasonex) treats allergy symptoms and nasal polyps. See...

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Montelukast

Montelukast (Singulair) prevents asthma symptoms and treats allergies. See dosing, the boxed mental health...

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Morphine

Morphine treats severe pain. Opioid - breathing risk, naloxone plan, storage rules...

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Moxifloxacin

Moxifloxacin (Avelox) is a fluoroquinolone antibiotic. See the tendon warning,...

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Mupirocin

Mupirocin ointment treats impetigo and bacterial skin infections. See how to apply it,...

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Mycophenolate

Mycophenolate (CellCept) prevents transplant rejection. See empty-stomach, pregnancy...

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Naloxegol

Naloxegol (Movantik) treats opioid-induced constipation. Empty-stomach rule...

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Naloxone

Naloxone nasal spray (Narcan) reverses opioid overdose, no prescription needed. See the...

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Naltrexone

Naltrexone blocks opioid effects and cuts alcohol cravings. See the opioid rules,...

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Naproxen

Naproxen (Aleve) is an NSAID for arthritis, pain, and fever, sold over the counter and by prescription. See...

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Naratriptan

Naratriptan treats migraine attacks. See the 10-day monthly limit and heart...

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Nebivolol

Nebivolol (Bystolic) is a beta blocker for high blood pressure. See dosing, warnings,...

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Nevirapine

Nevirapine (Viramune) treats HIV-1 as part of combination therapy. Carries a boxed warning for liver damage and severe skin reactions. Dosing and safety info from DailyMed and MedlinePlus.

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Niacin

Prescription niacin lowers cholesterol and raises HDL. See the flushing...

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Nicotine gum

Nicotine gum for quitting smoking: the chew-and-park method, the 12-week schedule,...

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Nicotine patch

The nicotine patch eases withdrawal while you quit smoking. See dosing steps, safety...

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Nifedipine

Nifedipine (Procardia XL) is a calcium channel blocker for blood pressure and angina. See dosing, grapefruit...

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Nitrofurantoin

Nitrofurantoin (Macrobid, Macrodantin) is an antibiotic used specifically for urinary tract infections. See...

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Nitroglycerin

Nitroglycerin sublingual tablets stop angina attacks. See the 5-minute rule, storage,...

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Norethindrone

Norethindrone treats endometriosis and abnormal bleeding. See schedules, serious...

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Nortriptyline

Nortriptyline (Pamelor) is a tricyclic antidepressant. See dosing, the sun warning, glaucoma...

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Nystatin

Nystatin treats oral thrush and intestinal fungal infections. See how to swish, dosing, side...

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Olanzapine

Olanzapine (Zyprexa) treats schizophrenia and bipolar I disorder. See dosing, warnings, weight...

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Olmesartan

Olmesartan (Benicar) is an ARB for high blood pressure. See the diarrhea warning, dosing,...

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Olopatadine eye drops

Olopatadine (Pazeo, Pataday) eye drops relieve allergic itchy eyes. See the 3-day...

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Omalizumab

Omalizumab (Xolair) treats allergic asthma, hives, nasal polyps. See allergy...

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Omeprazole

Omeprazole (Prilosec) is a proton pump inhibitor for heartburn, GERD, and ulcers. See dosing, the 14-day...

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Ondansetron

Ondansetron (Zofran) prevents nausea from chemo, radiation, and surgery. See timing, QT...

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Orlistat

Orlistat (Xenical, Alli) blocks about a third of the fat you eat from being absorbed, taken with meals. The...

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Oseltamivir

Oseltamivir (Tamiflu) treats and prevents flu. See the 48-hour window, dosing, behavior...

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Ospemifene

Ospemifene (Osphena) treats painful sex and vaginal dryness in menopause. See...

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Oxcarbazepine

Oxcarbazepine (Trileptal) controls seizures. See the sodium warning, mood watch,...

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Oxybutynin

Oxybutynin (Ditropan XL) is an anticholinergic for overactive bladder. See dosing, dry mouth, heat...

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Oxycodone

Oxycodone treats severe pain. Opioid - breathing risk, naloxone plan, storage rules...

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Paliperidone

Paliperidone (Invega) treats schizophrenia and schizoaffective disorder. See...

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Pancreatic enzymes (pancrelipase)

Pancrelipase (Creon) replaces missing digestive enzymes in pancreatic insufficiency. Dosing per meal, how to...

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Pantoprazole

Pantoprazole (Protonix) is a proton pump inhibitor for GERD and excess stomach acid. See dosing, long-term...

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Paroxetine

Paroxetine (Paxil) is an SSRI for depression, anxiety, OCD, PTSD, and PMDD. See dosing, withdrawal warnings,...

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Patiromer

Patiromer (Veltassa) removes excess potassium from the body. Mixing and timing...

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Paxlovid

Paxlovid (nirmatrelvir and ritonavir) treats COVID-19. See the 5-day window, dosing,...

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Penicillin VK

Penicillin V potassium treats strep throat and other bacterial infections. See dosing, allergy signs, side...

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Permethrin

Permethrin cream kills scabies mites; the lotion kills lice. See the exact application...

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Phenazopyridine

Phenazopyridine (Pyridium) relieves UTI pain but cures nothing. See the orange urine...

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Phentermine

Phentermine (Adipex-P) is a short-term appetite suppressant for weight loss, one 37.5 mg tablet each morning....

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Phenytoin

Phenytoin (Dilantin) is a classic seizure medication. See the no-switch rule, gum...

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Pimecrolimus cream

Pimecrolimus cream (Elidel) controls eczema when other treatments fall short. See...

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Pioglitazone

Pioglitazone (Actos) treats type 2 diabetes. See the heart failure warning, dosing, side...

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Pitavastatin

Pitavastatin (Livalo) is a statin for cholesterol. See muscle and liver...

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Podofilox

Podofilox (Condylox) is a self-applied prescription gel or solution for external genital warts. The...

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Polyethylene glycol 3350

Polyethylene glycol 3350 (MiraLAX) is an osmotic laxative for occasional constipation. See dosing, how long...

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Potassium chloride

Potassium chloride replaces potassium lost to diuretics and illness. See the warning...

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Pramipexole

Pramipexole (Mirapex) treats Parkinson's and restless legs. See the impulse...

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Prasugrel

Prasugrel (Effient) prevents clots after heart attack. See the bleeding...

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Pravastatin

Pravastatin (Pravachol) is a well-tolerated statin for cholesterol and heart risk. See...

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Prazosin

Prazosin (Minipress) is an alpha-blocker for blood pressure. See the first-dose fainting...

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Prednisolone

Prednisolone is a corticosteroid for inflammation and more. See the never-stop...

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Prednisone

Prednisone is a corticosteroid for inflammation, allergies, and autoimmune conditions. See dosing, taper...

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Pregabalin

Pregabalin (Lyrica) treats nerve pain, fibromyalgia, and seizures. See dosing, taper rules,...

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Premarin

Premarin (conjugated estrogens) treats menopausal hot flashes and vaginal atrophy. The boxed warnings, the...

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Primidone

Primidone (Mysoline) controls seizures. Anticonvulsant - mood warning and taper...

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Probenecid

Probenecid treats chronic gout and boosts certain antibiotics. See hydration,...

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Prochlorperazine

Prochlorperazine (Compazine) controls severe nausea and vomiting. See effects,...

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Progesterone

Micronized progesterone (Prometrium) pairs with estrogen in menopause therapy. See...

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Promethazine

Promethazine (Phenergan) treats allergies, nausea, and motion sickness. See the child...

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Propranolol

Propranolol (Inderal) is a beta blocker for blood pressure, tremor, migraine, and more. See dosing, asthma...

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Propylthiouracil

Propylthiouracil (PTU) treats overactive thyroid, reserved for when methimazole cannot be used. The liver...

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Prucalopride

Prucalopride (Motegrity) is a once-daily prescription pill for chronic constipation. Dosing, the mood-change...

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Pseudoephedrine

Pseudoephedrine (Sudafed) is a decongestant for nasal and sinus congestion. See dosing, who should avoid it,...

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Psyllium

Psyllium husk (Metamucil) is a bulk-forming fiber laxative for regularity. How to mix and take it, the fluid...

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Pulmicort (budesonide)

Pulmicort (budesonide) is an inhaled steroid for asthma, available as a nebulized suspension for children as...

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Pyrantel pamoate

Pyrantel pamoate is the over-the-counter dewormer for pinworm and roundworm, taken as a single weight-based...

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Pyridostigmine

Pyridostigmine (Mestinon) treats myasthenia gravis - timing is the whole game....

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Qsymia

Qsymia combines phentermine and topiramate for weight management, taken once each morning. The REMS program,...

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Quetiapine

Quetiapine (Seroquel) treats schizophrenia, bipolar disorder, and depression. See dosing,...

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QVAR (beclomethasone)

QVAR Redihaler (beclomethasone) is a twice-daily inhaled steroid for asthma from age 4 up, no priming or...

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Rabeprazole

Rabeprazole (AcipHex) is a PPI for GERD, ulcers, and H. pylori. See dosing, long-term...

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Raloxifene

Raloxifene (Evista) prevents osteoporosis and lowers breast cancer risk. See the clot...

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Ramelteon

Ramelteon (Rozerem) is a melatonin-receptor sleep aid. See how it differs, dosing,...

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Ramipril

Ramipril (Altace) is an ACE inhibitor for blood pressure and heart risk. See dosing, cough,...

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Ranolazine

Ranolazine (Ranexa) treats chronic angina. See grapefruit ban, QT caution,...

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Rasagiline

Rasagiline (Azilect) treats Parkinson's symptoms. See the food and drug...

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Repaglinide

Repaglinide is a fast-acting diabetes pill taken before each meal, skipped when you skip a meal. Dosing, low...

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Rifaximin

Rifaximin (Xifaxan) treats traveler's diarrhea, IBS-D, and liver-related brain fog. See...

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Rimegepant

Rimegepant (Nurtec ODT) treats and prevents migraine. See the every-other-day...

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Risedronate

Risedronate (Actonel) slows bone loss in osteoporosis, taken weekly or daily on an empty stomach. The water...

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Risperidone

Risperidone (Risperdal) treats schizophrenia, bipolar disorder, and autism irritability. See...

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Rivaroxaban

Rivaroxaban (Xarelto) is a blood thinner for AFib stroke prevention and blood clots. See dosing, food rules,...

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Rivastigmine

Rivastigmine (Exelon) treats dementia in Alzheimer's and Parkinson's. See...

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Rizatriptan

Rizatriptan (Maxalt) treats migraine attacks, tablet or melt. See dosing, the 24-hour triptan rule, heart...

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Rocephin (ceftriaxone)

Rocephin (ceftriaxone) is the workhorse injectable cephalosporin, once daily for serious infections from...

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Roflumilast

Roflumilast (Daliresp) is a once-daily pill that reduces COPD flare-ups in severe disease with chronic...

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Ropinirole

Ropinirole (Requip) treats Parkinson's and restless legs. See sleep and impulse...

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Rosuvastatin

Rosuvastatin (Crestor) is a high-intensity statin. See muscle-ache guidance, diet role,...

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Sacubitril-valsartan

Sacubitril-valsartan (Entresto) lowers heart-failure deaths and hospitalizations. See...

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Salicylic acid

Salicylic acid is the keratolytic in acne washes, wart removers, dandruff shampoos, and 6% prescription...

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Sarecycline

Sarecycline (Seysara) is a newer narrow-spectrum tetracycline for moderate-to-severe acne, taken once daily....

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Saw palmetto

Saw palmetto for prostate symptoms: the evidence is in, and it leans against. Facts...

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Scopolamine patch

The scopolamine patch (Transderm Scop) prevents motion-sickness nausea. See how to...

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Secukinumab

Secukinumab (Cosentyx) treats psoriasis, psoriatic arthritis, spondylitis. See TB...

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Selenium sulfide

Selenium sulfide shampoo treats dandruff, seborrheic dermatitis, and tinea versicolor. How often to use it,...

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Semaglutide

Semaglutide (Ozempic) is a once-weekly injection for type 2 diabetes. See dosing, thyroid warning, side...

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Senna

Senna (Senokot, Ex-Lax) is a stimulant laxative for short-term constipation. See the 1-week...

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Sertraline

Sertraline (Zoloft) is an SSRI for depression, OCD, panic attacks, PTSD, and social anxiety. See dosing, side...

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Sevelamer

Sevelamer (Renvela) binds phosphorus from food on dialysis. Take it with every...

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Sildenafil

Sildenafil (Viagra) treats erectile dysfunction. See how to take it, the nitrates rule, side...

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Silodosin

Silodosin (Rapaflo) relaxes the prostate and bladder neck to ease BPH urination problems. The once-daily...

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Silver sulfadiazine

Silver sulfadiazine (Silvadene) cream prevents burn infections. See how to apply,...

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Simethicone

Simethicone (Gas-X) relieves gas pressure, bloating, and fullness. See dosing for adults and infants, side...

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Sitagliptin

Sitagliptin (Januvia) is a DPP-4 inhibitor for type 2 diabetes in adults. See dosing, pancreatitis warning,...

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Sodium polystyrene sulfonate

Sodium polystyrene sulfonate removes excess potassium. The sorbitol rule and...

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Solifenacin

Solifenacin (VESIcare) treats overactive bladder. See the 3-day constipation rule,...

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Solriamfetol

Solriamfetol (Sunosi) treats daytime sleepiness from narcolepsy or sleep apnea. Facts...

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Sotalol

Sotalol (Betapace) treats serious heart-rhythm disorders. See the monitored start,...

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Spironolactone

Spironolactone is a potassium-sparing diuretic for heart failure, blood pressure, and fluid retention. See...

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Sucralfate

Sucralfate (Carafate) coats and protects ulcers while they heal. See the empty-stomach...

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Sulfamethoxazole-trimethoprim

Sulfamethoxazole-trimethoprim (Bactrim) is a sulfa antibiotic for UTIs and other bacterial infections. See...

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Sulfasalazine

Sulfasalazine (Azulfidine) treats ulcerative colitis and rheumatoid arthritis. See...

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Sumatriptan

Sumatriptan (Imitrex) treats migraine attacks. See dosing, the 10-day-per-month rule, heart warnings, and...

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Suvorexant

Suvorexant (Belsomra) treats insomnia - falling and staying asleep. See next-day...

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Tacrolimus ointment

Tacrolimus ointment (Protopic) is a steroid-free eczema option. See the warning, use...

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Tadalafil

Tadalafil (Cialis) treats ED, enlarged prostate, and PAH. See the nitrate rule, dosing...

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Tamoxifen

Tamoxifen blocks estrogen to treat and prevent hormone-receptor-positive breast cancer, taken 5 to 10 years....

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Tamsulosin

Tamsulosin (Flomax) is an alpha blocker for an enlarged prostate. See dosing, first-dose dizziness, side...

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Tazarotene

Tazarotene (Tazorac) is a potent prescription retinoid cream or gel for acne and plaque psoriasis, used...

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Telmisartan

Telmisartan (Micardis) is an ARB for blood pressure. See pregnancy rule, what to...

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Temazepam

Temazepam (Restoril) is a benzodiazepine for insomnia. See the 7-hour rule, warnings,...

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Terazosin

Terazosin treats enlarged prostate and high blood pressure. See the first-dose...

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Terbinafine

Terbinafine (Lamisil) tablets treat nail fungus over 6 to 12 weeks. See dosing, liver warnings, taste loss,...

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Terconazole

Terconazole vaginal cream and suppositories treat vaginal yeast infections. See...

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Teriparatide

Teriparatide (Forteo) is a daily self-injection that builds new bone in severe osteoporosis. The 2-year...

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Testosterone gel

Testosterone gel (AndroGel) treats low testosterone in men. See the transfer rules,...

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Theophylline

Theophylline opens airways in asthma, bronchitis, and emphysema. See the narrow-window...

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Thiamine

Thiamine (vitamin B1) treats deficiency, beriberi, and Wernicke's, with highest risk in alcohol dependence....

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Desiccated thyroid

Desiccated thyroid (Armour Thyroid) is animal-derived thyroid hormone for hypothyroidism, containing both T4...

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Ticagrelor

Ticagrelor (Brilinta) prevents clots after heart attack. See bleeding, breath...

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Timolol eye drops

Timolol (Timoptic) eye drops lower eye pressure in glaucoma, usually one drop twice daily. The asthma and...

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Tinidazole

Tinidazole (Tindamax) treats trichomoniasis, BV, giardia, amebiasis. See the alcohol...

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Tiotropium

Tiotropium (Spiriva) is a daily inhaler for COPD. See the capsule-inhaler steps, eye...

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Tirzepatide

Tirzepatide (Mounjaro) is a weekly injection for type 2 diabetes. See dosing, warnings,...

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Tizanidine

Tizanidine (Zanaflex) relaxes muscle spasms from MS and spinal injury. See the food rule,...

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Tofacitinib

Tofacitinib (Xeljanz) is a JAK inhibitor pill for rheumatoid arthritis, psoriatic arthritis, AS, and UC. The...

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Tolterodine

Tolterodine (Detrol) treats overactive bladder. See effects, whole-capsule...

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Topiramate

Topiramate (Topamax) treats seizures and prevents migraine. See dosing, birth control warning, heat warning,...

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Torsemide

Torsemide (Demadex) is a loop diuretic for fluid overload and blood pressure. See effects,...

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Toviaz (fesoterodine)

Toviaz (fesoterodine) is a once-daily extended-release anticholinergic for overactive bladder, starting at 4...

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Tramadol

Tramadol (Ultram) is an opioid for severe pain. See dosing, breathing warnings, naloxone...

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Tranexamic acid

Tranexamic acid (Lysteda) treats heavy menstrual bleeding. See the 5-day and clot...

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Trazodone

Trazodone is a serotonin modulator prescribed for depression and often for sleep. See dosing, priapism and...

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Trelegy Ellipta

Trelegy Ellipta is the once-daily triple inhaler (steroid, LAMA, LABA) for COPD and asthma. Who should be on...

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Tretinoin

Tretinoin cream treats acne and fine wrinkles. See the purge timeline, sun rules, side...

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Triamcinolone cream

Triamcinolone topical (Kenalog) is a prescription corticosteroid for eczema, psoriasis, and rashes. See how...

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Triamterene-HCTZ

Triamterene-HCTZ (Maxzide, Dyazide) is a paired water pill for blood pressure. See potassium...

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Truvada

Truvada (emtricitabine/tenofovir DF) treats HIV and prevents it as PrEP. See...

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Tymlos (abaloparatide)

Tymlos (abaloparatide) is a daily self-injection that builds bone in osteoporosis, used for up to 2 years....

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Ubrogepant

Ubrogepant (Ubrelvy) treats migraine attacks at the first sign. See the...

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Ulipristal emergency contraception

Ulipristal (Ella) prevents pregnancy up to 5 days after unprotected sex. See how it...

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Umeclidinium-vilanterol (Anoro Ellipta)

Anoro Ellipta combines umeclidinium and vilanterol in one once-daily inhaler for COPD. How to use it, who...

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Urea cream

Urea cream softens thick, rough skin and calluses and helps damaged nails. How the strengths differ, how to...

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Ursodiol

Ursodiol (Actigall) dissolves gallstones and treats PBC liver disease. See duration,...

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Ustekinumab

Ustekinumab (Stelara) treats psoriasis, Crohn's, colitis. See infection, skin...

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Valacyclovir

Valacyclovir (Valtrex) is an antiviral for cold sores, shingles, chickenpox, and genital herpes. See dosing...

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Valproate

Valproic acid treats seizures, mania, and migraine prevention. See boxed warnings,...

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Valsartan

Valsartan (Diovan) is an ARB for blood pressure and heart failure. See dosing, the pregnancy warning, and...

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Oral vancomycin

Oral vancomycin (Vancocin) treats C. difficile colitis in the gut. See course...

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Vardenafil

Vardenafil (Levitra) is a PDE5 inhibitor for erectile dysfunction, taken about an hour before sex. Dosing,...

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Varenicline

Varenicline (Chantix) blocks nicotine's reward to help quit smoking. See the mood...

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Venlafaxine

Venlafaxine (Effexor XR) is an SNRI for depression, anxiety, and panic disorder. See dosing, withdrawal...

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Verapamil

Verapamil is a calcium channel blocker for blood pressure, angina, and arrhythmias. See dosing, grapefruit...

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Vilazodone

Vilazodone (Viibryd) treats depression. See the boxed warning, food rule, dosing, side...

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Viloxazine

Viloxazine (Qelbree) is a non-stimulant ADHD medicine. See the behavior-watch...

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Vitamin D3

Vitamin D3 (cholecalciferol) for deficiency and bone health. See who needs it,...

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Vortioxetine

Vortioxetine (Trintellix) treats depression in adults. See the boxed warning, dosing,...

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Warfarin

Warfarin (Coumadin) is a blood thinner for clots and stroke prevention. See INR checks, vitamin K rules,...

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Xiidra (lifitegrast)

Xiidra (lifitegrast) is a prescription eye drop for dry eye disease, one drop twice daily. How it differs...

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Zafirlukast

Zafirlukast (Accolate) prevents asthma symptoms. See the empty-stomach...

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Zaleplon

Zaleplon (Sonata) is a short-term sleep aid for falling asleep. See sleep-behavior...

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Zantac and the 2020 recall

Zantac (ranitidine) was fully withdrawn in 2020 over NDMA contamination. What happened, whether old Zantac is...

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Zavegepant

Zavegepant (Zavzpret) is a nasal spray for migraine attacks. See limits and...

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Zinc

Zinc supplements: who needs them, the too-much problem, and the copper...

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Ziprasidone

Ziprasidone (Geodon) treats schizophrenia and bipolar disorder. See the heart-rhythm...

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Zoledronic acid

Zoledronic acid (Reclast) is a once-yearly IV infusion for osteoporosis. What the infusion involves, the...

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Zolmitriptan

Zolmitriptan (Zomig) stops migraine attacks. See dosing limits, chest-tightness...

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Zolpidem

Zolpidem (Ambien) is a sleep medication for insomnia. See dosing, the sleep-driving warning, next-day...

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Zonisamide

Zonisamide (Zonegran) is an add-on seizure medication. See the heat and sweating...

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