Colloidal Silver is so amazing that I can't believe it does what it does and I have beenmaking it and using it for several years now. I used to have a whole page of reserach links and tons of information on my web page but that was deleted by earthlink some time ago. If you search Colloidal Silver on any search engine you will get tons of information. Silver is a heavy metal but not in it's colloidal form, it just passes through the system sucking out negative ions. Let me know if I can help.