Valsartan is an angiotensin receptor blocker. It is also called an angiotensin-II receptor antagonist, or an AIIRA. You will have been prescribed valsartan either because your blood pressure is too high (hypertension), or because your heart is not working as well as it should (heart failure), or to protect your heart if you have recently had a heart attack.
This is a companion discussion topic for the original article at https://patient.info/medicine/valsartan-an-angiotensin-receptor-blocker-diovan