Ascorbic acid, more commonly known as Vitamin C, is a water-soluble compound, and a potent antioxidant. Vitamin C refers specifically to the L-enantiomer of ascorbic acid. Both the USP and FCC monograms are regulated by the US Pharmacopeia. The USP designation ensures that this product is suitable for use in pharmaceuticals, while the FCC food grade designation ensures that this product is suitable for use in food. Kosher certification requires that all ingredients, equipment, and processing comply with the Jewish dietary law. Ascorbic acid from Lab Alley is a strong antioxidant used in the manufacturing of pharmaceuticals, as well as an additive to certain food or as a Vitamin.