Pharmacology · single question

Mechanism of action of lisinopril?

  1. Calcium channel blocker
  2. ACE inhibitor
  3. Angiotensin II receptor blocker (ARB)
  4. Beta-1 adrenergic blocker
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Correct answer: B. ACE inhibitor

Lisinopril = ACE INHIBITOR — blocks angiotensin-converting enzyme, preventing angiotensin I → angiotensin II conversion. Reduces vasoconstriction, aldosterone release, fluid retention. Side effect: dry cough (bradykinin accumulation), angioedema.

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