Grape Extract contains flavonoid polyphenols and resveratrol the beneficial substances found in red wine. Grape Extract’s active ingredients exist in many plants and herbs important to healthful traditions around the world, such as green tea, bilberry and cranberry. The skin and seeds of grapes have a positive effect on heart health. Supplementing with Grape Extract promotes antioxidant support by helping to fight cell-damaging free radicals. Cell-damaging free radicals can come from anywhere - auto exhaust, smoking, even your own body.