Effexor Get Now Effexor, the brand name for venlafaxine, is an antidepressant medication primarily used to treat major depressive disorder (MDD), generalized anxiety disorder (GAD), social anxiety disorder (SAD), and panic disorder. As a serotonin-norepinephrine reuptake inhibitor (SNRI), Effexor works by balancing neurotransmitters in the brain, which can help improve [...]