My sone has been on chelation therapy for about 10 months and is doing very well. When we first began, he was not progressing in any of his therapies, the first 6 weeks were the worst of chelation therapy but after that he did very well, he now sleeps completely thru the night, he can now ride a bile, his processing delay is gone and follows instructions, the hardest thing has been the language. He has started saying one words sentences, but that is a start