Even though it is a "natural" product, grape seed extract can cause side effects. Some of the most commonly reported side effects include:
(Click Grape Seed Extract Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
Safety Issues With Grape Seed Extract
Grape seed extract seems to be relatively safe for many people, especially when used in moderation. However, some people may be more likely to experience problems than others. Therefore, you should talk with your healthcare provider prior to taking this product medicinally if you:
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.