*Maximum Antioxidant Protection, Improves and Restores Cardiovascular Function, Triggers SIRT1 Longevity Gene Resveratrol is a polyphenol isolated from Polygonum cuspidatum (also known as giant knot weed) root. It is also naturally found in the skin of the red grapes. It helps support the cardiovascular health through its antioxidant action. Studies have indicated that it can duplicate many anti-aging effects and may promote cellular longevity. In mouse and rat experiments, anti-cancer, anti-tumor, antiinflammatory, blood-sugar-lowering and other beneficial cardiovascular effects of resveratrol have been reported. HHA Resveratrol Ingredients: 1 Vcap - 400 mg. Polygonum cuspidatum Extract - root 400 mg, Red Wine Extract - 10 mg. Does not contain: sugar, salt, yeast, wheat, gluten, soy, milk, egg, shellfish, preservatives or alcohol. In sensitive individuals, high potency Resveratrol can cause stomach upset, so if you need to take it with food. Adult dose - 1 capsule once or twice daily.