Losartan is used for:

Treating high blood pressure. It is also used to reduce the risk of stroke in certain patients with high blood pressure and for treating kidney disease in certain patients with type 2 diabetes.

Losartan is an angiotensin-2 receptor antagonist. It works by blocking the action of angiotensin-2 in the body, which relaxes blood vessels and helps the kidneys to eliminate extra sodium and fluids...