Vitamin C promotes healthy capillaries, gums, and teeth, and helps the body absorb iron. It plays a role in collagen formation within connective tissue and it contributes to hemoglobin and red-blood-cell production in bone marrow. This vitamin may also help prevent viral and bacterial infections by boosting the immune system and it is recommended for treatment of the common cold. This supplement contains lemon bioflavonoids that work together with vitamin C to maintain the structural health and fluid permeability of capillaries. Bioflavonoids are also potent antioxidants that protect cells from free-radical damage.