Huggins was always against DMSA, but i have heard he says one can use low doses of DMSA now. i still don't like the idea, but if you want to go that route, best to contact him. Huggins has his own chelation program that he sells: http://www.pragmaticsw.com/drhuggins/Products.asp#Supplements. one of the things is a calcium product called transmix. i just recommend the known mercury chelators and list them on my site. the top ones are vitamin C, chlorophyll, MSM, alpha lipoic acid, and multi-minerals.