Thanks to all of you for your info. I have 14 Amalgam fillings and am now having slight nervous system problems, Im only 28 years. I read in Sherry Rogers' book Detoxify or Die that the Captomer is same stuff just cheaper and without prescription - 45 caps for $100 from Thorne Research on needs.com. I also have yeast problem - is the yeast increase problem unavoidable during chelation due to that hiding mercury floating around in the system while the body tries to eliminate it? Is there an effective chelator that does not promote yeast? These are very important issues to me. I appreciate thoughtful responses.