Bioflavonoids are naturally occurring, organic plant pigments.One of the richest sources of bioflavonoids is found in the pulp and rind of citrus fruits and vegetables whilst rutin is a bioflavonoid found in the buckwheat plant.In nature, bioflavonoids occur alongside vitamin C and appear to assist in the availability and use of this vitamin.They also play an important role in maintaining the health of the blood vessels since they support collagen integrity.Vitamin C is an important anti-oxidant and free radical scavenger needed for tissue repair.Each tablet supplies a combination of 500mg of vitamin C and 200mg of bioflavonoids (including rutin).