Dietary Supplement Plus Bioflavonoids & Rosehips Potent Antioxidant Protection Purity & Potency Guaranteed Vitamin C 1000 mg contains Citrus Bioflavonoids and Rosehips to optimize the body's use of Vitamin C. Bioflavonoids enhance the absorption of Vitamin C and act in synergy with Vitamin C to provide antioxidant protection, keep collagen healthy and help increase capillary strength. Vitamin C is a powerful antioxidant which supports healthy bones, cartilage, teeth and gums. It helps protect cells against environmental pollutants and deficiencies in the daily diet. All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.