Which drug is an ACE inhibitor?

Which drug is an ACE inhibitor?

• A. Lisinopril
• B. Losartan
• C. Verapamil
• D. Furosemide

Answer: (A)

ACE inhibitors work by blocking the enzyme that converts angiotensin I to angiotensin II. When this enzyme is inhibited, less angiotensin II is formed, leading to reduced vasoconstriction and lower aldosterone-driven sodium and water retention. That combination lowers blood pressure and eases the heart’s workload. Lisinopril is an ACE inhibitor, so it fits this mechanism and is the correct choice. The other drugs do not share this action: one blocks the angiotensin II receptor instead of the enzyme, another is a calcium channel blocker, and the last is a diuretic. Knowing these mechanisms helps predict how each drug affects blood pressure and related conditions, along with common side effects like cough or hyperkalemia for ACE inhibitors.

ACE inhibitors work by blocking the enzyme that converts angiotensin I to angiotensin II. When this enzyme is inhibited, less angiotensin II is formed, leading to reduced vasoconstriction and lower aldosterone-driven sodium and water retention. That combination lowers blood pressure and eases the heart’s workload.

Lisinopril is an ACE inhibitor, so it fits this mechanism and is the correct choice. The other drugs do not share this action: one blocks the angiotensin II receptor instead of the enzyme, another is a calcium channel blocker, and the last is a diuretic. Knowing these mechanisms helps predict how each drug affects blood pressure and related conditions, along with common side effects like cough or hyperkalemia for ACE inhibitors.