Cilazapril is primarily used as an antihypertensive agent, effectively managing high blood pressure by inhibiting the angiotensin-converting enzyme (ACE). This action helps relax blood vessels, reducing the workload on the heart and improving blood flow. It is often prescribed to patients with hypertension to lower the risk of heart attacks, strokes, and kidney problems. Additionally, cilazapril is utilized in the treatment of heart failure, where it aids in improving symptoms and increasing survival rates by decreasing the heart's strain. It may also be part of a comprehensive treatment plan for diabetic nephropathy, helping to protect kidney function in patients with diabetes. Regular monitoring of kidney function and potassium levels is recommended during its use.