We actually started my dad on zeolite also but stopped it due to the chemo. It is supposed to remove heavy metals so it is still sitting on the counter. In the week that he did take it, he complained of a lot of joint pain and flu like symptoms. I think it was probably detox symptoms. (We also started the glyconutrients at the same time.) He was hit pretty hard and heavy. He doesn't know if he wants to restart the zeolite or not after chemo. I think the symptons were a good thing.....you all have any opinions?