NURS 3100 Exam 1 Practice

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A nurse identifies a drug interaction that creates an additive effect. What does this mean?

  1. The interaction reduces the efficacy of both drugs

  2. The combined drug effect is less than the individual effects

  3. The drugs together increase the effects on the body

  4. There will be no significant effect from the interaction

The correct answer is: The drugs together increase the effects on the body

When two drugs create an additive effect, it means that when they are taken together, their combined effect is greater than the sum of their individual effects. This implies that the drugs together increase the effects on the body, making option C the correct answer. This interaction can be beneficial when the goal is to enhance the therapeutic effect of the medications. Options A, B, and D do not accurately describe an additive effect between drugs.

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