Find patient medical information for Effexor XR Oral on WebMD including its uses , Also, do not split the tablets unless they have a score line and your doctor or. Venlafaxine oral tablet is used to treat depression (immediate-release tablet and extended-release tablet). It's also used to treat social anxiety disorder. These highlights do not include all the information needed to use EFFEXOR XR safely and effectively. See full prescribing information for EFFEXOR XR. Venlafaxine tablets and capsules can be either immediate release or extended release. For those of us who live with invisible illnesses, mental health may not always get the level of care it needs. Once you're feeling better it's likely that you will continue to take venlafaxine for several more months. Always discuss read article side effects with a healthcare provider who knows your medical history. Important Do not stop taking venlafaxine suddenly, or without talking to your doctor first. If your symptoms are severe, call or go to the nearest emergency room. Try to exercisefor example, by going for a daily walk or run.