what is an ace inhibitor

An ACE inhibitor is a medicine that helps lower blood pressure by relaxing blood vessels and making the heart work less hard. It is commonly used for high blood pressure, heart failure, and some kidney problems.

How it works

ACE stands for angiotensin-converting enzyme. These medicines block that enzyme, which reduces angiotensin II, a substance that narrows blood vessels. When the vessels stay more open, blood pressure drops and the heart pumps more easily.

Common uses

• High blood pressure.

• Heart failure.

• Kidney protection in some people, especially those with diabetes or chronic kidney disease.

Common side effects

Some people get a dry cough, dizziness, low blood pressure, or higher potassium levels. More serious but less common risks include kidney problems and swelling of the face, lips, or throat.

Important caution

ACE inhibitors should not be used during pregnancy because they can harm the fetus. People with certain kidney artery problems or a known ACE inhibitor allergy may also need to avoid them.

Summary: An ACE inhibitor is a blood-pressure medicine that also helps protect the heart and, in some cases, the kidneys.