Enalapril is an angiotensin-converting enzyme inhibitor. It is used to treat hypertension by blocking the formation of angiotensin 2. Angiotensin 2 narrows the arteries which increases the blood pressure. Enalapril also helps patients with heart failure to maintain their blood pressure and improves the functioning of the heart. Side effects caused by Enalapril include; fatigue, chest pain, headache, dizziness and abdominal pain. The dosage is typically, 2.5 to 4.0 mg administered once in a day. Enalapril discounts and coupons are available here to help you start saving on your prescription.