If you have high blood pressure, you may take one or more medications to help lower it.

ACE (angiotensin-converting enzyme) inhibitors relax the blood vessels and lower blood pressure by decreasing production of a hormone called angiotensin II, which normally causes blood vessels to narrow. Examples of ACE inhibitors include lisinopril and moexipril.

Angiotensin II receptor blockers (ARBs) help control high blood pressure by blocking the effects of angiotensin II on blood vessels. Examples of ARBs include Avapro and Diovan.

Beta-blockers decrease nerve impulses to the heart and blood vessels, so the heart beats slower and with less force. Examples of betablockers include atenolol and metoprolol.

Calcium channel blockers keep calcium from entering the muscle cells of the heart and blood vessels, relaxing them and lowering blood pressure. Examples of these medicines include amlodipine and verapamil.

Diuretics help the kidneys flush extra sodium and water from the body. This helps lower blood pressure and eases the heart’s workload. Diuretics may be especially helpful in treating heart failure. Examples of these medications include furosemide and hydrochlorothiazide.

These medications can cause side effects in some people. However, it is important to always take your medications as instructed. Not doing so may raise your blood pressure and put you at risk for heart attack or stroke. If you notice any side effects, talk with your physician.