Medi-Clay-FX TM provides a rare source of calcium bentonite clay that promotes whole body detoxification. It contains a unique source of bentonite clay called calcium aluminosilicate. Consuming clay internally has a long history of use with outstanding, health-promoting effects and has been used by various ancient cultures. Unlike most sodium-based bentonites, Medi-Clay-FX TM contains a rare, freshwater-based bentonite believed to be the only known bentonite sourced from the site of an ancient underwater volcanic eruption that was flushed with fresh water for millions of years.