This chapter mainly focuses on the vitamins. Fat-soluble vitamins and water-soluble vitamins are two types of vitamins, which are discussed in this chapter. Vitamin-A, vitamin-D, vitamin-E, vitamin-K are discussed under the fat-soluble vitamins. This chapter provides brief description on water-soluble vitamins include ascorbic acid, cyanocobalamin, folic acid, niacin, pyridoxine, riboflavin and thiamine. Action, uses, dosage, brands, side effects, and nursing consideration of all vitamins are also discussed throughout in this chapter.