If colloidal silver can kill all pathogens (it's being used today topically), how can Hypocratically-oathed doctors deny it's value?

Silver salts are are larger clusters that can turn skin blue/gray, but colloidal silver is very small and safe, and kills all known pathogens/viruses, yet doctors still won't use it. WHY is that?

ckm19562014-11-02T06:36:25Z

Because physicians have this funny thing about hard, scientific evidence from reputable peer reviewed journals by qualified authors.

In the Oath, there's a reference to a concept now referred to as "Primum non nocere". First do no harm. This also means don't use unproven therapies.

?2014-11-02T07:34:19Z

So why don't they use colloidal silver in Africa to cure Ebola then