have you tried the houstonni digestive enzymes. they really to make a difference for some people but take a bit of getting the hang of in use. they need to be used consistently with every meal and sprinkled on the food as the capsules tend to hold the enzumes in and self consume when swallowed.
it is the one consistent thing i have seen help
in any metals posionings you get reduced digestive enzyme activity which then makes things worse becuse the body doesn't get the nutrients it needs.
generally the parents also benefit from taking them seems to be the case to.
www.houstonni.com and it pays to check out the yahoo enzymes and autism board for a while.
http://groups.yahoo.com/group/enzymesandautism/
