Enalapril (Vasotec®) belongs to a class of medicines known as angiotensin converting enzyme (ACE) inhibitors. It is used to treat mild to severe high blood pressure as well as congestive heart failure and kidney disease. It is also sometimes prescribed for other uses; ask your doctor for more information. Enalapril is given as a tablet, usually once or twice daily. A liquid suspension may also be available. Your doctor may start with a low dose, and gradually increase as needed.