Hi Sage. I will let you know if it helps. I saw my integrative dr. today, and he did not know anything about natural cellular defense. He looked up zeolite on medline but was unsure as to whether he felt it would pull the mercury out like DMSA and other chelators. But we decided that I would do a 24 hour urine mercury before I begin it, and then again a few weeks in to see if mercury is indeed being excreted. He did not know if this might have properties similar to Bentonite clay, which he uses for detoxification a lot, but he said that Bentonite clay does not chelate the mercury out. But my mercury free dentist swears by this NCD stuff, and says that he used it with a lot of his patients with good success, so I think it is worth a try. I am afraid to go right to DMSA because I have such problems taking vitamins and minterals which I know I will need to do. I also know I can take this with my amalgams in first to see if I tolerate it. I am preparing to have my amalgams removed soon (but I am also so fearful of this as well).