This product combines the powerful bioflavonoids, rutin and hesperidin with a full 500mg of vitamin C. These bioflavonoids are naturally sourced, rutin being extracted from buckwheat and hesperidin from citrus fruit skins. Bioflavonoids have been the focus of research as they appear to be used by the body in a number of ways; in particular they support vitamin C in the role it plays in the maintenance of healthy collagen and cartilage for the normal function of the skin, gums and the immune system. Vitamin C also contributes to the reduction of tiredness and fatigue and to the protection of cells from oxidative stress.Daily intake: 1 to 2 tablets