L.O.
May be that his digestive system needs to be rebalanced. Try Digestive enzymes with probiotics. My Son has had tummy troubles for most of his 11 years until we started him on these drinkable supplements. They taste great too. Also Strawberry-Kiwi flavored aloe juice helps when he has any issues. I purchased the products here: www.visionary-wellness.com. Found under the children's health tab in the products section. Hope this helps.