Sorry about the delay, folks - book by Bill Briggs was out of stock. A real 
disappointment, in the sense that it contains little that is new or important. 
The remarks therein to renal damage (not failure) is part of an unreferenced 
quote from Man C Fung, MD, and Michael Weintraub, MD 

"....While silver deposits derive from dietrary (e.g., mushrooms, milk, and 
bran), environmental or industrial exposure, the indiscriminate use of CSP's 
and other silver medicinals adds unnecessary exposure and may result in 
argyria. Although primarily a cosmetic concern, argyria is irreversible and has 
no effective treatment. In addition, neurological deficits and diffuse silver 
deposition in visceral organs have been reported with long-term use of oral 
silver products. Renal damage and metal fume fever have been reported with high 
silver exposures............."

There is no listing of the JAMA article title, or anything else - not even the 
year. All together, it seems there is little to fear from overdosing on CS.

Kevin Nolan