I've actually started using despite my budget and I have found that it is excellent stuff. All the mental clarity, and ability to function properly is just awesome. Although I am still not sure about it's mechanism of action. (possibly anti-viral). I have yet to see formal studies where the ability of zeolite to enhance heavy metal excretion is demonstrated. But never-the-less the anecdotal reports were enough to make me try it out and it's well worth it.
I also learned a few things regarding how to make its usage more effective. I will gladly share this info with you. Get back to me if you decide to use it.