* Dietary Supplement * Plus 500 mg Bioflavonoids * Potent Antioxidant Protection * Purity & Potency Guaranteed Natural Factors C Extra tablets contain 500 mg of Vitamin C in a blend of Citrus Bioflavonoids, Rutin, Rosehips and Hesperidin to support the body"s use of Vitamin C. Bioflavonoids and Vitamin C work synergistically to enhance each other"s activity. Bioflavonoids are essential for proper absorption of Vitamin C and have been shown to keep collagen healthy, have antioxidant properties and to increase capillary strength. Vitamin C is a potent, nutritional antioxidant supporting 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 according to Canadian Health Protection Branch Good Manufacturing Practices (GMP), among the highest standards in the world.