Final answer:
ARBs are drugs used to treat hypertension (high blood pressure) by blocking the effects of angiotensin-II, a hormone that increases blood pressure. They help relax blood vessels and improve cardiovascular health.
Step-by-step explanation:
Angiotensin-II receptor blockers (ARBs) are drugs that inhibit the effects of angiotensin-II, a hormone that constricts blood vessels and increases blood pressure. These drugs are commonly used to treat hypertension, or high blood pressure. By blocking the action of angiotensin-II, ARBs help relax blood vessels, reduce blood pressure, and improve cardiovascular health. Examples of ARBs include losartan (Cozaar), telmisartan (Micardis), and valsartan (Diovan).