Vitamins are direly important for human health, growth, development, reproduction and maintenance, and their deficiencies are imposing serious health hazards. Thirteen vitamins are true vitamins which are further classified as water soluble and fat soluble vitamins. Vitamin A, E, K and D are fa t soluble vitamins whereas, vitamin B1, B2, B3, B5, B6, B9, B12, biotic and vitamin C are water soluble vitamins. There are many other food components which have vitamin activity but these are not true vitamins. There are wide range of dietary sources including both plant and animal sources for these vitamins. Their regular dietary intake is essential for proper maintenance of health and development. Vitamin deficiencies are causing the serious health problems, impair ment of normal growth and development. Basic introduction of vitamins, their biological importance, daily dietary requirement and dietary sources for vitamins are discussed in this review article.
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