Certified Naturals PureWay-C Chewable Vitamin C - 500 mg - A Vitamin C formulated in a complex of citrus bioflavonoids and fatty acids. The citrus bioflavonoids are plant pigments sourced from the Citrus aurantium L. species of bitter oranges. These bioflavonoids are a powerful source of antioxidants that helps to protect the ascorbic acid in PureWay-C. Also in the formulation are fatty acids sourced from rice oil. These fatty acids help to deliver the water-soluble vitamin C across the intestinal barrier and into the tissues where it is needed, while helping with retention.