Perphenazine
（重定向自Perfenazine）
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Perphenazine is a typical antipsychotic drug. Chemically, it is classified as a piperazinyl phenothiazine. Originally marketed in the US as Trilafon, it has been in clinical use for decades.
Perphenazine is roughly five times as potent as chlorpromazine; thus perphenazine is considered a medium-potency antipsychotic.