The urinary excretion of perazine metabolites was studied in schizophrenic patients during the first weeks after initiation of perazine treatment. Quantitative determinations of 9 metabolites did not reveal important inter-individual differences in metabolite patterns. In all those patient who had not been intensively pretreated with other phenothiazines, a marked increase in the ratio of demethylation products to the corresponding N-methyl compounds was oberved between the first and fourth week of treatment. The hypothesis of an induction of a demethylating enzyme by perazine is discussed.
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Kanig, K., Breyer, U. Urinary metabolites of 10-[3′-(4″-methyl-piperazinyl)-propyl]-phenothiazine (perazine) in psychiatric patients. Psychopharmacologia 14, 211–220 (1969). https://doi.org/10.1007/BF00404219
- Schizophrenia Drug Therapy
- Phenothiazines Metabolism
- Enzyme Induction