Is Zeolite 100% Safe?

Is Zeolite 100% Safe?
Zeolite has been studied extensively by scientists in countries around the world. Natural zeolites are inert, non-toxic minerals which are federally classified as GRAS (Generally Regarded As Safe). There are over 40 natural occurring zeolites in nature and not all zeolites have the same chemical composition. The superior grade of zeolite (clinoptolite) we use in our product does not contain any fibrous positive charged particles and is free from all contaminants including heavy metals and radioactive elements.