Used as an antidepressant for the treatment of major depressive disorder (MDD). It functions by modulating serotonin receptors in the brain, enhancing neurotransmission linked to mood regulation. Unlike traditional antidepressants, it combines serotonin reuptake inhibition with activity at multiple serotonin receptor subtypes, potentially improving cognitive function and emotional processing in patients. Commonly prescribed when other antidepressants have limited effectiveness or cause undesirable side effects.