Did you know that the first carbohydrate you and every other mammal on Earth consumed was Lactose? Also known as milk sugar, Lactose is a natural sugar found in milk. Extracted from sweet or sour whey, NOW Real Food Pure Lactose is about 20% the sweetness of sugar and is used in unique food applications and as a sweet addition to childrens milk. Lactose is also a good way to support the growth of beneficial gut bacteria such as acidophilus.