: Lactose is a disaccharide sugar derived from galactose and glucose that is found in milk. Lactose makes up around 2–8% of milk (by weight), although the amount varies among species and individuals, and milk with a reduced amount of lactose also exists. It is extracted from sweet or sour whey
: L 1237 (OTTO) Lactose, monohydrate, GR 99%+ Cas 10039-26-6 - used as a diluent in dry-powder inhalation; seeLactose, Inhalation.