Pharmacokinetics and Pharmacodynamics · USMLE Step 1

What does Pharmacodynamics (PD) study?

  1. Drug absorption and tissue distribution
  2. Hepatic drug metabolism pathways
  3. Receptor binding and dose-response effects
  4. Renal routes of drug excretion
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Correct answer: Receptor binding and dose-response effects

Pharmacodynamics studies how the drug affects the body — i.e. receptor binding, post-receptor effects, and dose–response relationships.

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