Beth Kevles wrote: >>Nutramigen and Alimentum, besides being fearfully expensive, both contain casein (cow's milk protein) in hydrolized form. It's easier for some milk-allergic babies to tolerate, but is just as bad as milk-based formulas for others. As I understand it, the technical definition of a hypoallergenic formula like Nutramigen and Alimentum is that it should not cause an allergic reaction in more than 10% of the babies who use it. So the manufacturers and doctors who recommend it should already know that severely allergic infants may very well have a reaction to these formulas and take that into account. The problem then, if breastfeeding is not an option, is that the next step is an elemental formula like Neocate, which is expensive and not well tolerated by older infants. (Elemental formulas are made from synthetic amino acids.) Steve Carper Steve Carper's Lactose Intolerance Clearinghouse http://ourworld.compuserve.com/homepages/stevecarper