Enalaprilat is the active metabolite of enalapril. Enalapril is an angiotensin-converting enzyme (ACE) inhibitor that is clinically used to treat hypertension, heart failure, and diabetic nephropathy. Enalapril exhibits antihypertensive activity. Enalapril prevents and reverses renovascular hypertension-induced smooth muscle hypertrophy, collagen deposition, carotid media thickness growth, and other parameters of arterial remodeling. Additionally, enalapril improves endothelial function in migraine sufferers by increasing levels of NO.