This prescription drug (sold under brand names such as Cozaar® and Hyzaar®) treats high blood pressure. We also use it to prevent or treat issues like stroke and kidney disease in people who have high blood pressure, heart problems or diabetes. Losartan belongs to a class of drugs we call "angiotensin II receptor antagonists."
How does it work? Losartan comes as a pill. Usually, you take it once or twice a day. This drug blocks certain natural substances that tighten your blood vessels. It keeps your blood vessels open, helping your blood flow more smoothly and your heart pump more efficiently.
Losartan does have side effects such as pain, cramps and weakness. It can cause diarrhea and heartburn. Ask your doctor for a full list of side effects. Also, you should know that this drug may not be safe to use if you have certain drug allergies. Do not take it if you are pregnant or may become pregnant. If you're taking other drugs or supplements, your doctor may need to change their doses. And you may need to be watched closely to see if losartan causes any issues. Before taking this medication, make sure your doctor knows about all medical conditions you have and all medications and supplements you are taking, both prescription and over-the-counter.
Losartan can be helpful for many people when used correctly. So read all the instructions and warnings. Take it only as directed. For more info, talk to your doctor.