My dd cAnt tolerate full cream milk. She tolerates skim milk so long as its not more than 2 cups a day. If we don't follow those limits she gets crook - tummy pain, vomit, runs, constipation etc the symptoms vary depending on which milk and how much. I'm told she doesn't have lactose intolerance but when she only gets symptoms on those milks.... We know she is fine on lactose free milk.