Zeolites in regards to heavy metal chelation are supported only by hype and big claims. The price some of these companies charge for it is ridiculous. Zeolites are very abundant on the earth and can be bought for animal feed for dollars for a 50 lb bag. They do have healthy affects on the digestive system, but nothing has shown that they can enter your bloodstream and chelate mercury out of you.

As long as you don't get ripped off and pay way too much for it, it might make you feel better, but I would certainly not count on it to cure mercury toxicity.