A controlled dose-ranging study of remoxipride and haloperidol in schizophrenia - a Canadian multicentre trial
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The efficacy and side-effect profile for three dose ranges of remoxipride were compared with haloperidol in 242 schizophrenic inpatients in 13 centres. All patients were in a productive phase of schizophrenia according to DSM-III criteria. Relative efficacy of low dose (30-90 mg daily) vs middle dose (120-240 mg daily) vs high dose (300-600 mg daily) was compared with the standard dose of haloperidol (15-45 mg daily), as were the side effects. It was concluded that the therapeutic efficacy of remoxipride was comparable to that of haloperidol for acute episodes of schizophrenia; that the low dose range was significantly less effective than the higher ranges; that there was a clear advantage of remoxipride over haloperidol with respect to incidence and severity of extrapyramidal symptoms. The general safety profile of remoxipride as assessed from clinical chemistry, haematology, and cardiovascular variables suggests that remoxipride in the dose ranges studied can be used safely for the treatment of schizophrenic patients.
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