Derived from bamboo that is carbonized under very specific conditions. Reported to worki against heavy metal toxicity, chemicals, and food sensitivities. It also appears to adsorb mycotoxins and endotoxins (and other bio-toxins) from various organisms, take a load off the liver and kidneys and thus act in an anti-aging fashion. It is also reported to adsorb radiation (radon, nuclear, etc.). Many of the lyme literate physicians use it as part of their protocols.