Which drug is an ACE inhibitor used to manage hypertension?

• A. Eliquis (Apixaban)
• B. Lisinopril
• C. Nitroglycerin (NTG)
• D. Amlodipine, Diltiazem, Verapamil

Answer: (B)

ACE inhibitors lower blood pressure by blocking the enzyme that converts angiotensin I to angiotensin II, a hormone that constricts vessels and promotes fluid retention. By stopping this conversion, lisinopril causes vasodilation and reduced aldosterone activity, lowering blood pressure. This makes lisinopril the correct choice for managing hypertension. The other drugs work by different mechanisms: Eliquis is an anticoagulant, nitroglycerin is a nitrate used for angina, and the listed calcium channel blockers lower blood pressure through calcium channel effects but are not ACE inhibitors.