Pure, Buffered Vitamin C Powder Vitamin C is a water soluble nutrient well known for its vital role in the immune system.* Vitamin C is also necessary for the production of collagen (a structural protein in connective tissue) and is therefore important for skin, bone, and joint health.* Vitamin C is needed for amino acid metabolism, neurotransmitter synthesis, and the utilization of many nutrients, such as folic acid and iron.* It is also a highly effective antioxidant that can help maintain healthy tissues by neutralizing free radicals generated during normal metabolism and exposure to environmental stressors.* Sodium ascorbate is a non-bitter, non-acidic, buffered form of vitamin C in a highly soluble form. NOW® Sodium Ascorbate Powder is an inexpensive buffered form of vitamin C and is pharmaceutical grade. This product is sold by weight not volume. Natural color variation may occur in this product.