"Lactose intolerance" means that a person has difficulty digesting a sugar called lactose, which is found in milk and dairy products. This can cause symptoms like stomach pain, bloating, and diarrhea after consuming these foods. Full definition
It can be often used in place of milk for those with lactose intolerance as well as a beneficial supplement for people with various health ailments. (agymrat.com)
Now, as a parent myself, I've been especially careful to look out for any signs and symptoms of lactose intolerance in my own children as early as possible. (verywellfamily.com)
Their use in diagnosing lactose intolerance in young babies is therefore open to question. (breastfeeding.asn.au)