Pharmacodynamics · Pharmacology

Which term describes a genetically determined abnormal or unusual response to a drug?

  1. Drug side effect
  2. Idiosyncratic reaction
  3. Iatrogenic adverse effect
  4. Drug tolerance
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Correct answer: Idiosyncratic reaction

Idiosyncratic reactions are unpredictable and not related to the known pharmacological action of the drug. They are typically caused by genetic differences in metabolism or immune response in specific individuals.

Difficulty: Medium Question 19 of 20

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