With almost 100 years of documented use and they can only come up with 3 or 4 questionable cases of people with Argyria?
When you consider the billions of people that have existed since 1914, when a reported average of 18,000,000 people that used colloidal silver a year and they can only find 3 or 4 poorly documented cases of people with Argyria? With OLD 50 to 60 year old pictures? Something is wrong.
MOST LOW PPM products aka nanoparticle silver, silver nanoparticles, are made with chemicals, they are slow and ineffective and in the fact that they take a VERY Long time to achieve results, and counterproductive due to the chemical consumption to get results.
You would have to drink a gallons of 8 - 20 PPM Colloidal Chemicals a day to have some kind of virus killing effect., Just as Paul Karason did. Notice how his beard and hair is now gray, that is the effect of the chemicals. Nobody in their right mind would drink horrific nitrates or other chemicals that would cause you to loose your hair or get premature gray much more, turn you blue, except for......
Paul Karason. He is forever a classic reason and example as to why you should NOT to make your own colloidal silver, and he is living proof that you have to consume gallons of nanoparticle products to have some kind of bacteria killing effect.