Holistic Way Non-Acidic Buffered Vitamin-C 1000mg contains calcium ascorbate and mixed bioflavonoids that may promote the absorption and effects of Vitamin-C in the body. Vitamin-C supports healthy immune system functioning and may stimulate collagen growth. This non-acidic antioxidant formulation is also added with Vitamin D and Zinc which may also promote the maintenance of healthy capillaries, skin, bones, gums and teeth. It also supports wound healing and acts as free radical scavenger in the body.