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Angiotensin II receptor blockers help relax your veins and arteries to lower your blood pressure and make it easier for your heart to pump blood.

Angiotensin is a chemical in your body that narrows your blood vessels. This narrowing can increase your blood pressure and force your heart to work harder.

Angiotensin II receptor blockers block the action of angiotensin II. As a result, the medication allows your veins and arteries to widen (dilate).