Enalaprilat is primarily used in the treatment of hypertension and heart failure. It works by inhibiting the angiotensin-converting enzyme (ACE), which helps relax blood vessels, reducing blood pressure and improving blood flow. This makes it effective in managing high blood pressure and easing the workload on the heart, particularly in patients with congestive heart failure. It is often administered intravenously in hospital settings for rapid action in acute hypertensive episodes. Additionally, it is sometimes used in patients who cannot take oral medications, providing a critical option for those in need of immediate blood pressure control.