Effexor XR or Venlafaxine XR is an anti-depressant medicine, meaning it is used to cure clinical depression, severe anxiety and MDD or major depressive disorder. It is also quite useful for treating patients with panic attacks or social anxiety. As mentioned earlier, Effexor XR contains Venlafaxine which is a SNRI or serotonin-norepinephrine reuptake inhibitor. SNRIs facilitate the balance of norepinephrine and serotonin that are naturally found in brains. As a result there is an improvement in mood, stabilization of the mind, improved energy levels – all of which contribute to a stable mental state. Although some of the symptoms of a psychological disorder might seem fairly, Effexor XR is not to be taken as a self-medication. The dosage and prescription is derived from a detailed diagnosis, using DSM IV, which is the Diagnostic and Statistical Manual of Mental Disorders.