Constipation, loss of appetite, and nausea are some of the most common side effects of Effexor (venlafaxine). Here’s how you can manage Effexor side effects. Click to learn about EFFEXOR XR® (venlafaxine HCl). Please see the Med Guide & Full Prescribing Info, including Boxed WARNING. Venlafaxine is used to treat major depressive disorder, anxiety, and panic disorder. Learn about side effects, interactions and indications. What is Effexor, also known under the generic name venlafaxine? earn more about the risks, benefits, and side effects of Effexor here. Effexor XR (venlafaxine) is used to treat major depressive disorder, anxiety, and panic disorder. Includes Effexor XR side effects, interactions and indications. Description Venlafaxine is used to treat depression. It is also used to treat general anxiety disorder, social anxiety disorder, and panic disorder. Venlafaxine belongs to a group of medicines known as serotonin and norepinephrine reuptake inhibitors (SNRI). These medicines are thought to work by increasing the activity of a chemical called serotonin in the brain. This medicine is available. Effexor (Venlafaxine Hydrochloride) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Venlafaxine, sold under the brand name Effexor among others, is an antidepressant medication of the serotonin–norepinephrine reuptake inhibitor (SNRI) class. [5][9] It is used to treat major depressive disorder, generalized anxiety disorder, panic disorder, and social anxiety disorder. [9] Studies have shown that venlafaxine improves post-traumatic stress disorder (PTSD) as a recommended. Venlafaxine (brand name Effexor) is a serotonin–norepinephrine reuptake inhibitor (SNRI) antidepressant used to treat major depressive disorder (MDD) and several anxiety disorders. [1] Venlafaxine is available in immediate-release (IR) and extended-release (XR) formulations. [2] The actual dosage for each patient depends on the condition treated and other factors such as additional. Find patient medical information for Venlafaxine (Effexor) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings.