Nat C is a high strength, yet buffered vitamin C. It contains vitamin C 1000 mg, along with lemon bioflavonoids, hesperidin and rutin along with rosehip and acerola which are the natural sources of vitamin C. Vitamin C in Nat C is present with buffered salt that is gentle on stomach. Bioflavonoids in combination with vitamin C help to increase the absorption of Vitamin C in our body and potentiate its antioxidant power. In addition, NAT C helps to enhance immunity and strengthens blood capillaries. NAT C improve immunity due to the action of lemon bioflavonoids and Vitamin C. NAT C is a less acidic Vitamin C formulacontaining lemon bioflavonoids