text: what is wesveratral? it is something that is combined with grape seed extract - not sure if i spelt it correctly. hi jerri lynn.   i think you are asking about resveratrol.  resveratrol is a polyphenol found in many foods, especially the skin of dark grapes.  it is a powerful antioxidant.  research suggests that it can be helpful in prevention of many chronic diseases including cancer, diabetes and cardiovascular disease.  the health benefits attributed to red wine may be, in part, a result of the resveratrol content of the wine.  hope this helps you.  best wishes.