I have had my ds on soy the last month as he has had the awful poos, screaming and unwellness- if thats a word. But, i think it has made his symptoms worse. I have now put him back onto milk and am cutting wheat. I hope it helps him, maybe there are other things you could look at?
I myself am dairy and wheat intolerant, do you know if you suffer also?
x madame x
It's very common for gluten intollerance to go through families...gluten intollerance commonly skips generations too. My Mum is celiac (sp?), her sister's arent, but her Mum was. My sis and I are not but we need to get our kids tested when they're old enough.

Soy allergy happens too...so maybe get your little boy tested when he is old enough...in the meantime, it's alll a bit trial and error.

It could also be a preservative or sugar thing maybe? Some commercial soy milks are absolutely PACKED with c.rap and unessescary ingredients....I go for the ones that are basically just soy, water and added calcium...just like a make at home.