I happened across colloidal silver while looking for alternative remedies and I've been researching this stuff for the last few hours and I have to tell you...it's really bizarre.
Basically, back in the day folks would take colloidal silver suppliments because it was believed that anything in the body that wasn't supposed to be there, like diseases and bacteria, would attach themselves to the silver and be flushed out of the system.
In the fifties in was commonly used in nose sprays. In the 70's it was given to dairy cows as a way to battle tumors and growths like mastisis (sp?). The FDA put a stop to that.
I haven't figured out if the medicinal claims are true or not from my research, but people sure do sing it's praises. What I did find out is a bizarre side effect too much silver in the body will have on you.
The silver deposits itself deep within your tissue. You get this skin condition called argyria and it's permanent. You basically turn blue.
Here's a picture and the story of a lady it happened to. http://together.net/~rjstan/rose1.htmlhttp://www.tomifobia.com/rosemary.html
She was prescribed nose spray as a child in the 50's.
Here's an even weirder story. Stan Jones is a politician from Montana. This guy had the brilliant idea in the late 90's to get a one up on the rest of society and prepare himself for Y2k and the rumored antibiotic shortage. He made his own silver remedy and not is a permanent shade of blue. http://news.bbc.co.uk/1/hi/world/americas/2297471.stm
I'm floored that when I searched for colloidal silver forums I happened across a slew of folks that take this stuff regularly for everything from asthma to cancer in hopes of a cure. Some folks even give it to their kids. To read some of the stuff on the net, it's the next big miracle cure for everything. Unreal. People are actually buying it.
Glad I did my research first. Wouldn't want to be blue or anything.