Zeolite contains aluminum ions. Could this potentially be harmful?
No. The aluminum is very strongly bonded into the cage-like structure of the zeolite, and so is completely unavailable biologically. It would take temperatures of 900°F (480°C) to break the aluminum free from the zeolite crystal. There is no chance that liquid zeolite can introduce any aluminum into the body. In fact, tests prove not only that all the aluminum in zeolite stays in the zeolite, but also that liquid zeolite causes additional aluminum to be excreted through the urine. That means that liquid zeolite efficiently removes aluminum from the body.