Does not do

So what doesn't colloidal silver do?

It doesn't interact with any known drug or medications.
It doesn't upset the stomach, and, many have said they noticed
a improvment in their digestion.
It does not sting the eyes.
Medical journal reports and documented studies spanning the past 50 years indicate no known side effects from oral or I.V. administration of colloidal silver in animal or human testing.
Properly produced and used colloidal silver doesn't cause argyria (a permanent skin discoloration -Bluish tint).
This was caused by overuse of silver compounds or silver produced by a grinding technique.