As if drinking multiple glasses a day wasn't bad enough, there was no quality control as to how much silver was in each glass. I believe it was Dr. Oz who told him that he had in effect tattooed his organs and skin from the inside.
That can happen when you someone adds salt (silver chloride) to the solution when making it on their own. As I stated before, I have used it for 25 years and there is no trace of blue on my skin. Amazon has many thousands of reviews on colloidal silver btw.