Enalapril is used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is also used to treat heart failure and to help prevent people with a certain heart problem (left ventricular dysfunction) from developing heart failure. Enalapril belongs to a class of drugs known as ACE inhibitors. It works by relaxing blood vessels so blood can flow more easily. In addition to some lifestyle changes (such as smoking and/or drinking less and exercising more), it’s often advised to take medication, such as Enalapril, to manage high blood pressure.