The name vitamin was coined as a term derived from “vitamine,” a compound word from “vital” and “amine.” The classication of vitamin is based on biological and chemical activity but not structure. There are mainly 13 types of vitamins (Vit): A, B1, B2, B3, B5, B6, B7, B9, B12, C, D, E, and K. In this chapter, ve vitamins are discussed: Vit C, Vit D, Vit E, Vit B6, and Vit B12.