Contain a relevant level of bioflavonoids, the natural compounds that are often associated to vitamin C in fruits and vegetables 500mg per tablet to enable a more stable level of vitamin C in the blood for a longer period studies show that vitamin C and bioflavonoids are most effective when taken together A gradual release of vitamin C (6-8 hours) which replicates the natural process of food digestion The beneficial effects of vitamin C available over a sustained period