What should I avoid while taking venlafaxine (Effexor, Effexor XR)?
Avoid drinking alcohol, which can increase some of the side effects of venlafaxine. Venlafaxine can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Tell your doctor if you regularly use other drugs that can cause sleepiness (such as cold or allergy medicine, narcotic pain medication, sedatives, muscle relaxers, or medicines to treat seizures or anxiety). These may add to sleepiness caused by venlafaxine. What other drugs will affect venlafaxine (Effexor, Effexor XR)?