At Doctor's Best, we believe in the art of graceful aging. Our formula contains Resvinol, a proprietary blend providing polyphenols and trans-resveratrol from the red wine matrix and the root of the Japanese knotweed plant to deliver antioxidant support. Guaranteed by the ProfileProven Quality Assurance System developed by Ethical Naturals Inc ., our extract undergoes meticulous testing at every stage to ensure purity and potency.