I see the anon before me posted that zeolite contains heavy metals. I recently have been doing som reading about zeolite and so far everything indicates that zeolite has lots of aluminum in it. So I really cannot understand why this is sold for human consumption at all.....aluminum poisoning has identidal symptoms to mercury. I would definitely stay away from anything called zeolite, even washing powders as zeolite is the main ingredient and on those powder packages which give a more detailed ingredients list, you can read that zeolite is in fact: sodiumALUMINUMsilicate....... I have now switched to liquid detergents instead <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />