With repeated use of a drug, more of the drug is necessary to achieve the same effects. This demonstrates the development of

Question

Quizplus · Accepted Answer

Tolerance is the phenomenon where increased amounts of a drug are required to produce the same effect over time. This occurs because the body adapts to the presence of the drug, and its receptors become less responsive to it. The other choices, withdrawal and sensitization, refer to different phenomena related to drug use but do not explain the observed effect of increased drug tolerance. Cross-tolerance can occur when tolerance to one drug extends to another drug with similar properties, but this is not specified in the question stem. Therefore, the best choice is A) tolerance.

With Repeated Use of a Drug, More of the Drug