Losartan Potassium

Also sold as Losartan Potassium, Losartan potassium Tablets, 100 mg, Losartan potassium

Medicine summary · from official FDA labels · Oct 19, 2026

Serious warning: WARNING: FETAL TOXICITY When pregnancy is detected, discontinue losartan potassium as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus [see Warnings and Precautions (5.

8 recalls on record — a recall affects specific batches; check with your pharmacist.

What it’s used for

Losartan potassium is an angiotensin II receptor blocker (ARB) indicated for: Treatment of hypertension, to lower blood pressure in adults and children greater than 6 years old. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions.

How to take it

Hypertension • Usual adult dose:50 mg once daily. ( 2.

Important warnings

Hypotension: Correct volume or salt depletion prior to administration of Losartan potassium. ( 5.

Common side effects

Most common adverse reactions (incidence ≥2% and greater than placebo) are: dizziness, upper respiratory infection, nasal congestion, and back pain. ( 6.

Interactions

Agents increasing serum potassium: Risk of hyperkalemia.

If pregnant or breastfeeding

Forms & strengths

10 MG/ML Oral Suspension · 100 MG Oral Tablet · 25 MG Oral Tablet · 50 MG Oral Tablet

Questions to ask your doctor or pharmacist

Is this the right medicine for my condition, and how long should I take it?
What side effects should I watch for, and which need urgent attention?
Does this interact with my other medicines, supplements, or alcohol?
What should I do if I miss a dose or take too much?