Bioflavonoids are essential for helping Vitamin C with its anti-oxidant properties and for preventing free radical damage. It is essential for strengthening capillaries and for speeding up the healing process in the body during injuries of wounds, sprains and muscles. It is an anti-oxidant. Deficiency signs of Bioflavonoids include easy bruising, varicose veins and also frequent sprains. Bioflavonoids work with Vitamin C to increase its effectiveness.