Milk is a good source of organic vitamins. According to many researchers, synthetic vitamins, many of which are manufactured from petrochemical bases, are not absorbed well by the body. Milk is a good source of Vitamin A, Vitamin D, Vitamin B12, riboflavin (Vit B2 ) and niacin (Vit B3). Vitamin A is good for the eyes, Vitamin D, together with calcium, is good for the bones and teeth and has recently been discovered to have a host of other health benefits, including strong anti-cancer properties. The B vitamins are essential for energy production and are good for helping cope with stress and depression.