Are you sure it's milk? the milk in the box has only one name in common with the milk. Boxed milk is sold in three forms, depending on the fat content. Whole milk contains more than 3.5% fat, semi-skimmed fat is about 1.7% and low-fat milk between 0.3 and 0.7%. There is a lot more vitamins A, D, E and K in whole milk, it has more energy, but the amount of calcium is the same in all types (120 mg of calcium in 100 ml of milk). (tuxedo)