What are the possible side effects of Effexor XR (Venlafaxine)?
Get emergency medical help if you have any of these signs of an allergic reaction: skin rash or hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Contact your doctor promptly if you have any of the following side effects, especially if they are new symptoms or if they get worse: mood changes, anxiety, panic attacks, trouble sleeping, irritability, agitation, aggressiveness, severe restlessness, mania (mental and/or physical hyperactivity), thoughts of suicide or hurting yourself. Call your doctor at once if you have any of these serious side effects: increased blood pressure (severe headache, blurred vision) nausea, vomiting, diarrhea, fever, fast heartbeat; hallucinations, loss of coordination, fainting, coma seizure (convulsions) extreme thirst with headache, nausea, vomiting, and weakness; or easy bruising or bleeding Less serious side effects may include: drowsiness, dizziness, nervousness, or anxiety dry mouth, increased sweating nausea, vomiting, diarrh
