Dexfenfluramine for weight gain secondary to psychotropics.

We describe the use of dexfenfluramine (Redux) in six patients with mood disorders (bipolar disorder = 3; major depression = 3) who developed significant weight gain as a result of their psychotropics. All patients were females with an age range of 27-58 years. The duration of the trial varied from 3 to 20 weeks, with the dexfenfluramine dosage being 15 mg twice daily. Weight loss ranged from 2 to 23 pounds. None of the patients had any evidence of primary pulmonary hypertension or serotonin syndrome, despite being on serotonergic agents such as fluoxetine, paroxetine, and sertraline.