Key Benefits of C-Bioflav 1000 Highest Potency Bioflavonoids (Standardized to 50%)Optimal Immune System SupportSupports Healthy Collagen Production and Connective TissuesProvides Antioxidant Protection C-Bioflav 1000 is a synergistic blend of vitamin C and a potent, standardized complex (50%) of citrus bioflavonoids for optimal efficacy. It has been shown that the combination of vitamin C and bioflavonoids provides powerful antioxidant protection, supports optimal immune function and supports healthy collagen production.Gluten Free, Suitable for Vegetarians