Lisa, have you tried lactose free products? There are many on the market, including Lactaid milk. I know this doesn't always work, as I have a non-CAH son who is allergic/intolerant of the 'protien' in milk instead of the fat. But it's worth a try. He is very skinny, but his pediatrician is not worried because he is very healthy otherwise, and he says he'd rather see kids be skinny than fat. I can't think of any other options (besides peanut butter) at this time, but if I do I'll post again.