Drug Interactions · Pharmacology

Which drug interaction occurs when one drug reduces or blocks the effect of another drug?

  1. Synergism
  2. Potentiation
  3. Antagonism
  4. Summation
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Correct answer: Antagonism

Antagonism occurs when one drug decreases or blocks the pharmacological effect of another drug. This may occur at the receptor level or through other mechanisms.

Difficulty: Medium Question 6 of 20

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