How do ACE inhibitors work?
ACE inhibitors block your body from producing a chemical called angiotensin II. When angiotensin II enters your blood stream your blood vessels become narrower. This gives your blood less space to move in, which raises your blood pressure. Angiotensin II also triggers a hormone that makes your body retain water. Having more fluid in your body, in a restricted space, will cause your blood pressure to rise. ACE inhibitors lower your blood pressure by reducing angiotensin II in your body. This allows your blood vessels to relax and widen, making it easier for blood to flow through. It also lowers the amount of water your body retains, which lowers your blood pressure.
