Protein Fat Linoleic acid Vitamins: A, C, D, E, K, thiamin (B1), riboflavin (B2), B6, B12 Niacin Folic acid Pantothenic acid Calcium Minerals: magnesium, iron, zinc, manganese, copper Phosphorus Iodine Sodium chloride Potassium chloride Carbohydrates Carbohydrates are an important source of energy for growing infants, as they account for 35 to 42% of their daily energy intake. In most cow's milk-based formulas, lactose is the main source of carbohydrates present, but lactose is not present in cow's milk-based lactose-free formulas nor specialized non-milk protein formulas or hydrolyzed protein formulas for infants with milk protein sensitivity. Lactose is also not present in soy-based formulas.