Grape Seed Extract Side Effects

Final Thoughts

You may experience some or none of the side effects of grape seed extract listed in this article. Unfortunately, there is no way for you or your healthcare provider to know beforehand if you will have side effects from a supplement you have never tried. Therefore, make sure to let your healthcare provider know if you develop any side effects while taking grape seed extract or if something "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.