The amount of drug required to cause an effect is referred to as:

Question

A) maximal efficacy
B) dose-effect relationship
C) relative potency
D) adverse effect

Answer 1

C) relative potency
The amount of drug required to cause an effect is referred to as relative potency. Note that potency is rarely important overall. A drug with a higher potency requires smaller doses to produce the same effect as a drug with lower potency. The largest effect that a drug can produce is also known as its maximal efficacy, but its potency does not indicate anything about its maximal efficacy.