You may experience some or none of the Vytorin side effects listed in this article. Unfortunately, there is no way for your healthcare provider to know beforehand whether you will have side effects from a medicine that you have never tried. Therefore, let your healthcare provider know if you experience any side effects while taking Vytorin or develop something that "just does not seem right." While it may not be a side effect, your healthcare provider will be able to diagnose and treat the problem.