Indena - Science is our Nature 25% Anthocyanosides Supports Vision Vegan Dietary Supplement Suitable for Vegetarians/Vegans Non GMO Bilberry + Grapeskin Polyphenols is a synergistic blend of standardized flavonoid antioxidants. The Swedish bilberry extract contains 25% polyphenols as anthocyanosides. The red grapeskin extract contains 30% polyphenols, including antocyanins. These flavonoids support vision by enhancing antioxidant status in the eye and reducing capillary permeability and fragility.