Effect of amantadine on sexual dysfunction in neuroleptic-treated male schizophrenic patients.

Twelve male schizophrenic outpatients treated with neuroleptics took part in an open-label drug study to assess the impact of co-administration of amantadine hydrochloride (100 mg daily for 6 weeks) on sexual function. Amantadine improved the patients' scores in three out of four areas of sexual function: desire (p < 0.02), erection (p < 0.05), and satisfaction from sexual performance (p < 0.05); there was no change in ejaculatory function. Amantadine may be effective for improving sexual function in male schizophrenic patients receiving neuroleptic medication.