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Risperidone Augmentation of Selective Serotonin Reuptake Inhibitors in Major Depression.
Background:At low doses, risperidone acts as a 5-HT2 antagonist. Preclinical data suggest 5-HT2 antagonists may enhance the action of serotonin. This report examines the clinical use of risperidone to augment selective serotonin reuptake inhibitor (SSRI) antidepressants in patients who have not responded to SSRI therapy.
Method: In 8 patients with major depressive disorder without psychotic features (DSM-IV) who had not responded to an SSRI, risperidone was added to the ongoing SSRI treatment. Hamilton Rating Scale for Depression scores were obtained before and after the addition of risperidone.
Results:These 8 patients remitted within 1 week of the addition of risperidone. Risperidone also appeared to have beneficial effects on sleep disturbance and sexual dysfunction.
Conclusion: Risperidone may be a useful adjunct to SSRIs in the treatment of depression.