Oral tablets: 25 mg, 50 mg, 100 mg
About this drug
Losartan (low-SAR-tan) is used to treat high blood pressure and heart failure. It is also used to treat kidney problems in people with diabetes. It is an angiotensin (AN-jee-oh-TEN-sin) II receptor blocker (ARB).
Common side effects are:
- Tiredness. Be careful while taking this drug. Driving and using machines can be dangerous if you’re not alert.
Rare side effects include:
- Stomach pain
- Skin rash
- Trouble breathing or swallowing
- Joint pain
- Increased potassium levels
If any of these side effects becomes severe or bothers you, call your doctor. Do not take over-the-counter medicine for your symptoms.
Other high blood pressure medicines may further decrease your blood pressure. Tell your doctor or pharmacist about any prescription medicine, over-the-counter medicine, or herbal products that you are taking. He or she will check for interactions. Losartan may increase potassium levels. Too much potassium can be dangerous. Potassium and potassium-sparing diuretics (amiloride, spironolactone, triamterene) can increase levels of potassium in your body. These drugs may be used with losartan, but only under your doctor’s supervision.
If you miss a dose
If you miss a medicine dose, take it as soon as you remember. If it is within 2 hours of the time of your next dose, skip the missed dose. Take your next dose at its scheduled time, and continue your usual dosing schedule. Do not “double up” on doses to catch up.
Avoid alcohol and salt
While you are on this medicine, you should avoid alcoholic drinks and potassium supplements. Avoid salt substitutes because most contain potassium. You also should follow a low-salt diet.
How to take this medicine
This medicine usually is taken once a day. You may take it with or without food.
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