What do you know about Casein sensitivities?
From Wikipedia: Casein is often listed as sodium caseinate, calcium caseinate or milk protein.
From Pediasure's website: Ingredients: Water, Sugar (Sucrose), Corn Maltodextrin, Milk Protein Concentrate,(....)
Personal info: James has been on solely Pediasure since he was 1 year old. He has spit up only once (not even any 'urps' during the day) since starting him on a blended diet. The time he spit up, he had yogurt in his drink at lunch, and he spit up at dinner. BUT, he then sat down and finished his drink (very unusual!). 4 out of 5 days vomit free is probably a record since he started the nightly vomiting!!