Biperiden and piroheptine do not affect the serum level of zotepine, a new antipsychotic drug.

Otani, K; Hirano, T; Kondo, T; Kaneko, S; Fukushima, Y; Noda, K; Tashiro, Y · Br J Psychiatry · 1990

case_series · Level IV

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Abstract

The effects of biperiden and piroheptine on the serum level of zotepine were studied in 15 schizophrenic and 6 mentally retarded in-patients. Neither of these anticholinergic drugs affected the serum level of zotepine nor caused significant side-effects. In the schizophrenics the total scores on the BPRS did not change significantly with either combination of drugs.

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