Hi, Im a mother of a nine year old autistic boy I've seen one of DAN doctors who has put my son on CF/GF diet along with supplements as SNT , DMG , Enzyme Complete , Zinc , Silinum and Taurine , Calcium and other antifungal medicine which I dont remember the name right now I have started all this since 18 / 12 / 2005 there is minor improvements, he has been sleeping quietely than before starting to pronounce words when needed, I want to know more about chelation , and when did you start this therapy and why did you take the decision to start it not fearing side effects .. please let me know