Trupril 5mg – Hypertension & Heart FailureTrupril 5mg Tablets Lisinopril for High Blood Pressure & Heart Failure Trupril 5mg is a prescription medication containing Lisinopril (5mg), an angiotensin converting enzyme (ACE) inhibitor used to treat high blood pressure (hypertension) and heart failure. Lisinopril works by inhibiting the enzyme ACE, which is responsible for converting angiotensin I into angiotensin II, a substance that constricts blood vessels and increases blood pressure. By