what does effexor do
A: Effexor (venlafaxine) is an antidepressant in the class of drugs called selective norepinephrine reuptake inhibitors (SNRIs). SNRIs affect chemicals in the brain that may become unbalanced and cause depression. It is used to treat major depressive disorder, anxiety, and panic disorder.: Effexor (venlafaxine) and Effexor XR (venlafaxine extended-release) are in a drug class called selective serotonin and norepinephrine reuptake inhibitors (SNRIs). Effexor is used in the treatment of depression.