Antiplatelet Drugs · Pharmacology

Which of the following antiplatelet drugs is a prodrug that requires two-step hepatic activation by CYP450 enzymes, particularly CYP2C19?

  1. Ticagrelor
  2. Prasugrel
  3. Clopidogrel
  4. Dipyridamole
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Correct answer: Clopidogrel

Clopidogrel is a thienopyridine prodrug. Its conversion to an active metabolite is heavily dependent on the CYP2C19 enzyme, which is why genetic polymorphisms in this enzyme can lead to reduced antiplatelet efficacy.

Difficulty: Medium Question 2 of 20

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