If its all the same to you guide your specialist before taking any medication. Non particular Name: losartan (loe SAR tan) Brand Names: Cozaar What is losartan? Losartan is in a get-together of meds called angiotensin II receptor foes. Losartan keeps veins from narrowing, which cuts down beat and upgrades circulatory system. Losartan is used to treat (hypertension) and to abatement the risk of stroke in people with hypertension. Losartan is also used to treat kidney issues in people with sort 2 diabetes. Losartan may similarly be used for purposes other than those recorded in this pharmaceutical aide.