Pharmacokinetics and Pharmacodynamics · USMLE Step 1

Which of the following best defines Pharmacokinetics (PK)?

  1. What the drug does to the body
  2. What the body does to the drug
  3. The safety profile of the drug
  4. The potency and efficacy of the drug
Show answer and explanation

Correct answer: What the body does to the drug

Pharmacokinetics describes absorption, distribution, metabolism and excretion (ADME) — i.e. what the body does to a drug.

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