Colloidal silver is not a homeopathic medicine. It was briefly in vogue in the days before sulphanilamide and antibiotics, and some wound dressings contain silv

Colloidal silver is not a homeopathic medicine. It was briefly in vogue in the days before sulphanilamide and antibiotics, and some wound dressings contain silver. It works by giving bacteria heavy metal poisoning. Some people make the stuff themselves and drink it, which over time can give one argyria (https://en.wikipedia.org/wiki/Argyria https://en.wikipedia.org/wiki/Argyria). Definitely not a good idea to do that, but I suspect for putting on minor wounds this might be more a case of "there are better solutions".