Drug Classes and Mechanisms · USMLE Step 1

Which of the following best defines ‘drug class’ in pharmacology?

  1. Drugs sharing the same chemical name
  2. Group sharing mechanism, structure, or use
  3. All drugs used for the same disease
  4. All drugs from one manufacturing company
Show answer and explanation

Correct answer: Group sharing mechanism, structure, or use

A drug class groups agents that share similar chemical structure, mechanism of action, or therapeutic use, facilitating classification and comparison.

Difficulty: Medium Question 12 of 19

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