Vitamins are the organic substances required for normal metabolism. Daily needs supplied by well-balanced diet. Fat-soluble vitamins include vitamin A, vitamin D, vitamin E, and vitamin K. Water-soluble vitamins include vitamin B1, vitamin B2, vitamin B3, Vitamin B6/pyridoxine, Vitamin B12, folic acid, and vitamin C/ascorbic acid. All these vitamins are discussed in this chapter along with their source, daily allowance, and uses. There are 11 flowcharts are also provided in this chapter which are self-explanatory and helpful for readers.