Cardiovascular pharmacology · USMLE Step 1

Which drug class lowers blood pressure primarily by inhibiting the conversion of angiotensin I to angiotensin II and increasing bradykinin levels?

  1. Calcium channel blockers
  2. Beta-blockers
  3. ACE inhibitors
  4. Thiazide diuretics
Show answer and explanation

Correct answer: ACE inhibitors

ACE inhibitors block angiotensin-converting enzyme, reducing angiotensin II formation and preventing bradykinin breakdown. This causes vasodilation and lowers BP.

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