An organic chemical compound is called a vitamin when the organism can’t synthesize the compound in sufficient quantities and it must be obtained through diet, thus term vitamin is conditional upon circumstances and the particular organism. Main sources of vitamins are green leafy vegetables, fruits, nuts, milk, eggs, legumes, fatty fish, meat, sprouts etc. Vitamins maintain our body organelles in proper way the providing necessary fuel to it. These boost up our immune system. Especially vitamin E is used to lessen harmful effects of medical treatments as dialysis and radiation. Also vitamins necessary for structural and functional maintenance of skeletal and cardiac system also smooth muscles. Each vitamin has its own set of physiological function in our body. Simply vitamins keep our body in spontaneity.