Dietary Supplement Grapeseed & Citrus Bioflavonoids Provide Antioxidant Support 21st Century... For a Healthier Future Sodium Free Laboratory Tested - Guaranteed Quality 21st Century Red Wine Extract is designed to promote antioxidant health by fighting against the effects of free radicals. Important components such as resveratrol, polyphenols and ellagic acid help ensure you receive the natural benefits of grapes, while high-potency vitamin C provides immune system support.