Get an allergy work up done on your son..if he is allergic to soy or dairy, his intestinal track will remain irritated. A good clue for allergies is if your child is itchy, or has a lot of ear wax, or mucous/spit up/nose drainage. If allergies, ask about a medicine call sodium cromulyn, a liquid the child drinks, which can help ease the irritation of the intestinal track. Get a probiotic into your son, check kirkman labratories on the web for some of their things, and check into goats milk for your child----sounds yucky, but many children who have problems with reflux etc have success with goats milk.