Drug Interactions · Pharmacology

Which interaction occurs when two drugs with similar effects produce a combined effect equal to the sum of their individual effects?

  1. Antagonism
  2. Potentiation
  3. Additive effect
  4. Tolerance
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Correct answer: Additive effect

An additive effect occurs when the combined effect of two drugs equals the sum of their individual effects. This often occurs when drugs act through similar mechanisms.

Difficulty: Medium Question 4 of 20

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