A new synthetic narcotic has been developed by the pharmaceutical industry. This drug, called Drug A, has three times the efficacy of an existing synthetic narcotic, Drug B. However, Drug B has twice the affinity for opiate receptor sites in the body as Drug A. Which drug will have the greater effect when administered at the same dosage?
A) Drug A
B) Drug B
C) Identical effects when administered at the same dosage
D) Cannot be determined by the information given

Question

Quizplus · Accepted Answer

Although Drug B has twice the affinity for opiate receptor sites, Drug A has three times the efficacy. This means that the percentage of drug that actually produces an effect in the body is higher for Drug A, making it more effective than Drug B when administered at the same dosage.

A New Synthetic Narcotic Has Been Developed by the Pharmaceutical