Lactose is the primary carbohydrate of breast milk, including those belonging to animals; cow’s, goat’s and sheep’s milk contain high levels of lactose.¹ The carbohydrate is known as a disaccharide and is comprised of simple sugars, glucose and galactose¹.

Lactose is an important energy source for infants, providing almost 40% of their daily energy needs. Once digested, it also assists in the absorption of minerals such as calcium and iron¹.