Pharmacology · single question
What is the mechanism of action of lisinopril?
Show answer and explanation
Correct answer: C. Inhibits ACE (angiotensin-converting enzyme)
Lisinopril is an ACE inhibitor — it blocks angiotensin-converting enzyme, preventing conversion of angiotensin I → II, reducing vasoconstriction and aldosterone release → lower BP. Diuretics flush water/sodium (option A). Beta-blockers decrease heart workload (option B). Beta-blockers block beta receptors (option D). A common side effect is dry cough.