One way that "classical" first-generation antipsychotic drugs are grouped is by potency. A drug would be MOST likely considered a high-potency drug if a typical dose were:
a. 200 mg
b. 100 mg
c. 50 mg
d. 5 mg
D
A drug would most likely be considered high potency if a typical dose were 5 mg. A drug is classified as high potency when a dose of only a few milligrams can result in significant antipsychotic effects. This is in contrast with low-potency antipsychotics, which may require 50 times as large of a dose to result in similar effects. Examples of high-potency antipsychotics are Prolixin, Stelazine, and Haldol.
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