1 Definition of losartan

Meaning of losartan: A drug used to treat high blood pressure.

A drug used to treat high blood pressure. Losartan blocks the action of chemicals that make blood vessels constrict (get narrower). It is a type of angiotensin II receptor antagonist. Also called Cozaar and losartan potassium.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.