In reply to UKC/UKH Gear:
gravy has a point, and the extraction of silver has contributed to a number of environmental problems in the USA, Australia, Spain and no doubt elsewhere!
On top of that, long term use of colloidal silver not only interferes with some antibiotics but can also cause argyria, a non-fatal condition which turns the skin permanently blue!
These days colloidal silver is normally associated with homeopathic remedies, none of which have ever been proven to work.
UKC, I understand advertising funds this awesome media source but do think you could be a bit more choosy about what you advertise!