www.drugs.com/medical-answers/abilify-weight-gain-3569183/
...when aripiprazole was combined with antidepressants that had high activity at serotonin receptors (such as citalopram, fluoxetine, paroxetine, sertraline, or venlafaxine), it acted as an antagonist at the receptor which resulted in weight gain. But when it was combined with a low serotonergic...