Re: what many people?

I only know of 2 cases of Argyria, both of which are regularly trotted out by opponents of CS. One is a U.S.A. congressman who made his own CS, self-admittedly incorrectly with a constant voltage (3 X 9v batteries) rather than constant current method & tapwater. Interestingly he reportedly still uses CS but makes it properly now. The other case is Rosemary something who, for a long period of time, took large quantities of "CS" made with silver salts or a high level of silver suspended with animal protein, which is a very bad idea & which noone here recommends.

Take a look at past posts on the subject it has certainly been discussed here before.

Exile