I don't waste my $$ on what is called probiotics; I'd prefer to eat a fresh fruit right off the tree or bush.
We know one fact, a 10 month old baby can only digest mother's milk and all else is a poison. "IF" mom's milk was not possible, then the second choice is raw goat milk from the best goat you can find and dilute 1/2 with distilled water, 1 drop of safflower/oregano and 1 dropper of pure olive leaf tincture per quart of milk, 3rd choice is well smashed fresh fruits.
These 3 options allows his body to do the best it can, all medical methods will be ???? I would exhaust my chiropractor first before the baby ever seen a MD that prescribes drugs.
Good Luck and my theory has and always will be; the use of insurance will take you down a bad path.