Double-Blind Comparison of Half-Dose and Standard-Dose Flupenthixol Decanoate in the Maintenance Treatment of Stabilised Out-Patients with Schizophrenia

Abstract

A double-blind controlled trial of 50% dose reduction in maintenance treatment in stable out-patients with low BPRS scores and good social function shows a significantly higher relapse rate in the low-dose group at 12 months (P < 0.05). After an interval of 24–36 months from dose reduction, 56–76% had experienced a relapse and 76–79% had resumed their former dosage. No clear advantage was shown for the lower dose in either a reduction of side-effects or improved social function, but a reduced prevalence or lower rate of symptom emergence for tardive dyskinesia was suggested.