Aijian, I have to make a correction. I have been typing DMSA accidentally when I meant to write transdermal-DMPS. Dr. Buttar does not like DMSA as a chelator due to its structure being very similar to succinic acid in the kreb cycle. DMPS has gotten a lot of negativity due to its misproper use at high doses and/or using it as an injection or push IV. I STRONGLY urge you to buy Dr. Buttar's heavy metal DVD. I would burn you a copy but i dont have a dvd copier. I just finished watching 2hours and i learned some things I thought I would've known. It changes your perspective on somethings. He goes over chelation in detail, and the cellular explanation, his approach on health, testimonies, chelation method, etc.