What is enalapril?

Enalapril is a prescription medication used to treat high blood pressure. Enalapril is in the class of medications called ACE (angiotensin-converting enzyme) inhibitors. It works by decreasing certain chemicals that tighten the blood vessels, so blood flows more smoothly and the heart can pump blood more efficiently. Enalapril is also used in the treatment of congestive heart failure, after heart attacks to improve survival and to decrease progression of kidney damage in people with diabetes.