The British Journal of Psychiatry 140: 280-286 (1982)
© 1982 The Royal College of Psychiatrists
Once weekly pimozide versus fluphenazine decanoate as maintenance therapy in chronic schizophrenia
R McCreadie, M Mackie, D Morrison and J Kidd
In a double blind trial, 28 male chronic schizophrenic in-patients received
either pimozide, given once weekly, or fluphenazine decanoate, given mostly
once fortnightly. There was no difference in relapse rates over nine
months. However, three-quarters of the patients on pimozide who completed
the trial developed at least mild tardive dyskinesia. All patients on
pimozide lost weight, the average loss being 5.4 kg (12 lbs). Plasma
pimozide levels suggested satisfactory drug compliance. Plasma prolactin
levels confirmed that in the pimozide group there was fluctuating dopamine
receptor antagonism, while in the fluphenazine group average plasma
prolactin levels throughout most of the interval between injections were at
the upper limit of normal.