Until Tony drops by with his input, I'll put in my two cents. Ionic silver isn't useless. It works for minor illnesses, such as colds and minor infections. But when it comes to serious conditions, a person may need actual colloidal silver. Now, personally, I will not take antibiotics. Whenever, I have any type of infection, I use colloidal silver and, actually, I have never used anything other than Utopia Silver. I will say that Utopia Silver and Mesosilver are comparable as they are both made with the same state of the art methods. Anyway, I will say that colloidal silver has never failed me or my pets and I have used it for serious conditions such as pneumonia. The difference in ionic silver vs. colloidal silver has to do with the ionic to colloidal ratio and I'm not real good at explaining the particulars. But I use it all the time know that it works.