Abstract
The concomitant use of olanzapine and fluoxetine has been advocated for the treatment of various psychiatric disease states. We describe a case in which the combination of olanzapine and fluoxetine appears to have caused the psychopathology of melancholic depression requiring hospitalization in a 40-year-old female. Postulated mechanisms for this drug interaction, particularly CYP450 isoenzyme inhibition by fluoxetine, is discussed.