Lisinopril is an ACE inhibitor widely prescribed to treat high blood pressure, manage heart failure, and improve survival after certain heart attacks. It works by relaxing blood vessels, making it easier for the heart to pump blood efficiently. Lisinopril lowers blood pressure in adults and children (≥6 years). By reducing vascular resistance, it helps prevent complications such as stroke, kidney damage, and heart disease. It reduces strain on the heart and helps manage symptoms like fatigue and shortness of breath.