Take Nature's Goodness Bioactivated Resveratrol for the powerful antioxidantal effects of Red Grape Skin and Resveratrol. There is a small amount of Resveratrol in the body because of its fast metabolism. This decreases its potency. By taking Bioactivate Resveratrol, the black pepper extract that is full of piperine, a substance which prevents the break down of enzymes in the body, increases the potency over 1000% and your body absorbs it a lot faster. Each capsule contains 500 mg of grape skin extract with black pepper extract, bioactivated to equivalent of 1,000 glasses of red wine. Ingredients: Red Grape (Vitis vinifera ) skin extract, black pepper extract, gelatin.