Angiotensin II receptor blockers (ARBs) are used to treat high blood pressure. Some can also help with other conditions, such as lowering the risk of stroke and worsening kidney problems in certain people. ARBs work by blocking the action of a natural substance called angiotensin II, which helps to relax blood vessels and lower blood pressure. These medications are typically taken as oral pills. Examples include losartan (Cozaar), valsartan (Diovan), olmesartan (Benicar), telmisartan (Micardis). You can discuss with your healthcare provider to find the best option for you.