Rare Effexor side effects occur in less than 1 percent of people taking the drug. Because these side effects are so uncommon, it is difficult to tell whether they are actually caused by the medication itself or something else.
Some of these rare side effects include but are not limited to:
You may experience some or none of the side effects of Effexor listed in this article. Unfortunately, there is no way for your healthcare provider to know beforehand if you will have side effects from a medicine that you have never tried. Therefore, make sure to let your healthcare provider know if you develop any side effects while taking the drug. Also, let your healthcare provider know if you develop something that "just does not seem right." Although it may not be an Effexor side effect, your healthcare provider will be able to diagnose and treat the problem.