A physiological tolerance to one drug that reduces the effects of another drug is
A) intolerance.
B) cross-tolerance.
C) synergism.
D) antagonism.

Question

Quizplus · Accepted Answer

Cross-tolerance occurs when the tolerance to one drug leads to a reduction in the effects of another drug. This is due to similar mechanisms of action between the two drugs on the body. Intolerance refers to a negative reaction to a drug, whereas synergism and antagonism are when two drugs have combined effects that either enhance or reduce each other's effects.

A Physiological Tolerance to One Drug That Reduces the Effects