Losartan is a pill that helps relax blood vessels so the heart doesn’t have to work so hard. It belongs to a group called angiotensin receptor blockers (ARBs) and is often prescribed for high blood pressure and kidney problems.
By blocking a hormone called angiotensin II, losartan stops the vessels from tightening up. The result is lower blood pressure, less strain on the heart, and a lower risk of stroke.
Doctors usually start adults on 50 mg once a day. Depending on how you respond, the dose can go up to 100 mg. Kids may get a lower dose based on weight. Always follow the exact amount your doctor writes.
Take losartan with or without food – it doesn’t matter. The key is to take it at the same time every day so your blood pressure stays steady. If you miss a dose, grab it as soon as you remember, unless it’s almost time for the next one. Don’t double up.
Store the tablets at room temperature, away from moisture. If you’re traveling, keep the bottle closed and out of direct sunlight. A short coffee break won’t affect the drug, but avoid heavy alcohol bingeing because it can raise blood pressure again.
Common side effects are mild: a bit of dizziness, headache, or an occasional cough. If you feel light‑headed when you stand up, that’s a sign your pressure might be too low – call your doctor. Severe reactions like swelling of the face, lips, or tongue need immediate help.
Losartan can interact with potassium‑rich foods, salt substitutes, or other medicines that raise potassium. It also mixes poorly with certain pain relievers, like NSAIDs, which can blunt its blood‑pressure‑lowering effect.
Know when to get medical advice: persistent dizziness, sudden weight gain, or kidney pain. Regular blood‑test checks are usually recommended, especially the first few months.
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