Pharmacokinetics and antipsychotic effect of remoxipride in chronic schizophrenic patients
1990
Single dose pharmacokinetics and the antipsychotic effect of 4 weeks treatment with three fixed dose levels of remoxipride (a selective D2 receptor antagonist) were studied in chronic, stable schizophrenic inpatients. After a placebo washout of 1 month, 15 patients entered the study. Of these, 11 patients received a single 50 mg oral dose of remoxipride for pharmacokinetic evaluations. All 15 patients were randomly assigned to treatment with oral remoxipride either 25 mg t.i.d., 50 mg t.i.d. or 100 mg t.i.d. for 4 weeks. Blood samples for remoxipride and prolactin assays were taken at 0, 0.33, 0.5, 0.66, 1.0, 1.5, 2, 3, 4, 8, 12, 24, 28, 32 and 48 h after drug intake. The pharmacokinetic characteristics were similar to those previously found in normal healthy volunteers: the mean peak plasma concentration of remoxipride after 50 mg was 3.3 μmol/l, the mean time to reach this was 2.1 h; the mean area under the plasma concentration/time curve was 27.8 μmol/1.h.1 -1 and the mean elimination half-life of remo...
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