The best Colloidal Silver is not even a Colloidal Silver , but something much more or more importantly, much less then a colloidal. It is called molecula silver and you can find it the link provided to you as well as information on it. I strongly recommend you to contact Jim Haszinger to learn more about it, because if you want a product that really works, then this is it. I've been using it for 2 years now.