Side Effects From Effexor XR

Effexor XR, chemically known as venlafaxine, is an antidepressant used to treat conditions such as generalized anxiety disorder, social anxiety disorder and panic attacks. The medication works as a mood elevator and increases the amount of serotonin and norepinephrine chemicals in the brain. Effexor XR releases venlafaxine into the patient's body throughout the day to help reduce anxiety and panic symptoms. Like any drug, Effexor XR does carry the risk of some side effects.

Suicidal Behavior

• Suicidal thoughts and behavior are possible with use of Effexor XR and other antidepressants, according to MedlinePlus. This risk is higher among children as well as adults under the age of 24.

Overdose

• Overdose is a possible side effect of taking Effexor XR, according to MedlinePlus. Such symptoms include increased eye pupil size, seizures, rapid or slow heartbeat, and loss of consciousness.

Allergic Reaction

• An allergic reaction to venlafaxine is possible, according to MedlinePlus. Signs of a reaction include hives, itching, swelling of the face, eyes, lips, or tongue, and difficulty breathing.

Stomach Issues

• Some side effects of Effexor XR affect the stomach, according to MedlinePlus. These symptoms may include gas, constipation, diarrhea, nausea, vomiting, stomachache and loss of appetite.

Other Side Effects

• Other possible side effects of venlafaxine usage include weight loss, dry mouth, weakness, fatigue, headaches, nightmares, frequent urination and loss of sexual desire.