title: A randomized double-blind 12-week study of quetiapine, risperidone or fluphenazine on sexual functioning in people with schizophrenia.
abstract: Sexual dysfunction is common in people suffering from schizophrenia and is reported by patients to be a significant reason for medication nonadherence. This report contains data for 27 people with schizophrenia who participated in a randomized double-blind 12-week trial of risperidone (4 mg/day), quetiapine (400 mg/day) or fluphenazine (12.5 mg/day). At baseline and endpoint, subjects were rated on the Changes in Sexual Function Questionnaire (CSFQ), the Prolactin-Related Adverse Event Questionnaire (PRAEQ) and had prolactin levels drawn. Endpoint prolactin levels were 50.6 +/- 40.4, 24.4 +/- 18.5, and 8.2 +/- 4.4 mg/dl for risperidone (N = 12), fluphenazine (N = 9) and quetiapine (N=6), respectively (F = 7.5,df = 2, p = 0.005, controlling for sex). Orgasm quality/ability improved significantly for quetiapine as compared to fluphenazine and risperidone (F = 4.41, df = 2, p = 0.033). Seventy-eight percent of patients on fluphenazine reported sexual dysfunction whereas did only 42 and 50% of those on risperidone and quetiapine. Forty percent of quetiapine patients reported they felt better about their sexuality as compared to previous treatment, as did 55% on risperidone. Conversely, only 13% of fluphenazine subjects reported any improvement. Hormonal problems (menstrual problems, gynecomastia, galactorrhea) were predominately observed in risperidone-treated subjects. Overall, quetiapine was associated with a normalization of prolactin levels and had the greatest benefits among these drugs regarding sexual functioning.
authors.affiliation: Maryland Psychiatric Research Center, University of Maryland, Box 21247, Baltimore, 21228, USA. dkelly@mprc.umaryland.edu
authors.forename: Deanna L
authors.initials: DL
authors.lastname: Kelly
authors.forename: Robert R
authors.initials: RR
authors.lastname: Conley
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D014150:Antipsychotic Agents / Q000009:adverse effects*; D003987:Dibenzothiazepines / Q000009:adverse effects*; D004311:Double-Blind Method; D005260:Female; D005476:Fluphenazine / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009948:Orgasm / Q000187:drug effects*; D010349:Patient Compliance; D011388:Prolactin / Q000097:blood / Q000187:drug effects; D000069348:Quetiapine Fumarate; D018967:Risperidone / Q000009:adverse effects*; D012559:Schizophrenia / Q000097:blood / Q000150:complications / Q000628:therapy*; D012725:Sexual Behavior / Q000187:drug effects; D012735:Sexual Dysfunction, Physiological / Q000139:chemically induced* / Q000150:complications
chemical_list: D014150:Antipsychotic Agents; D003987:Dibenzothiazepines; D000069348:Quetiapine Fumarate; D011388:Prolactin; D018967:Risperidone; D005476:Fluphenazine