I am not really sure about the other uses, but I had a bottle sitting around and never used it because I had read about it turning people blue so kind of just sat there. Then a few years later I got this itch on my foot that would not go away. I tried everything from normal western science and over the counter medicine. I was getting really worried becuase this thing itches so bad I would scratch through the skin until there was a cut on the bottom of my foot. That made it feel better having a cut there but then it hurt. Get this though. When the cut would heal it would begin to itch again. There was no getting away from this thing. In my search to heal this thing I read o line that colloidal silver was a good way to heal it possibly. I started spraying a few sprays of it on my foot everyday. Besides immediate relief when I would spray it, it eventually like after a few weeks doing this a couple times a day completely eliminated the itch. So ya the stuff does work and serves a purpose. I think you just have to be careful with it and the people who take it until they are blue in the face are a little nuts!