• Also another name for EC 3.2.1.23, BETA GALACTOSIDASE, do not confuse.
  CRISP Thesaurus
  National Institutes of Health, 2006
• An enzyme that breaks down lactose, a type of sugar found in milk and milk products.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• An enzyme that breaks down milk sugar (lactose) in the body.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• An enzyme which catalyzes the hydrolysis of LACTOSE to D-GALACTOSE and D-GLUCOSE. Defects in the enzyme cause LACTOSE INTOLERANCE.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• Formulated in various oral forms for use in lactose intolerance, Lactase Enzyme (Lactaid) is a dietary supplement that breaks down lactose (milk sugar) in dairy foods. It prevents gas, diarrhea, and bloating caused by consumption from dairy foods in people that lack the natural lactase enzyme. (NCI04)
  NCI
  U.S. National Cancer Institute, 2021