Perphenazine is a typical antipsychotic drug. Chemically, it is classified as a piperazinyl phenothiazine. 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.
Read more about Perphenazine: Pharmacokinetics, Uses, Side Effects, Formulations, Interactions