Losartan is an oral drug that belongs to the drug class called angiotensin receptor blockers (ARBs). It keeps blood vessels from narrowing, which lowers blood pressure and improves blood flow.
It is prescribed for the treatment of hypertension. It is also used to lower the risk of stroke in certain people with heart disease.
Important information about losartan
Do not use if you are pregnant. Stop using and tell your doctor right away if you become pregnant. Losartan can cause injury or death to the unborn baby if you take the medicine during your second or third trimester. Use effective birth control.
In rare cases, losartan can cause a condition that results in the breakdown of skeletal muscle tissue, leading to kidney failure. Call your doctor right away if you have unexplained muscle pain, tenderness, or weakness especially if you also have fever, unusual tiredness, and dark colored urine.
Call your doctor at once if you have any of these symptoms after taking losartan:
- pain or burning when you urinate;
- pale skin, feeling light-headed or short of breath, rapid heart rate, trouble concentrating;
- wheezing, chest pain;
- drowsiness, confusion, mood changes, increased thirst, loss of appetite, nausea and vomiting;
- swelling, weight gain, feeling short of breath, urinating less than usual or not at all; or
- high potassium (slow heart rate, weak pulse, muscle weakness, tingly feeling).
- a feeling that you might pass out;