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 child's doctor for more information. Enalapril is given as a tablet, usually once or twice daily. A liquid suspension may also be available. Your child's doctor may start with a low dose, and then be gradually increased as needed.