What are the Side Effects of Effexor Xr?

Effexor XR is an antidepressant and in some people it can actually cause suicidal thoughts. But for others, Effexor XR has been a ‘life saver’. Some other, more common, side effects include: dizziness, headache, blurred vision, insomnia, constipation and weight loss or gain. It is highly important to have open communication with your doctor and to keep all follow-up appointments.