NOW® Lactose, or milk sugar, is derived from whey. Like whey, lactose milk sugar is useful in assisting in the growth of beneficial bacteria such as Lactobacillus acidophilus in the G.I. tract. Lactose is about 20% as sweet as sugar and is a great milk additive for children.
Warnings: If symptoms of lactose intolerance occur, such as abdominal gas or diarrhea, discontinue use immediately.