Bio-C balances select forms of high-potency vitamin C with bioflavonoids to benefit the immune system, heart, eyes, and skin. Bio-C provides vitamin C to keep you strong and healthy. Research indicates that vitamin C is used in the maintenance of bones, muscle, and blood vessels—in addition to other functions. In order to give you maximum benefits, Bio-C is formulated with citrus bioflavonoids, which support the absorption of vitamin C. You’ll know you’re getting the most out of this choice.