[QUOTE=jim020cricket]
I did some research and it's supposed to be really good for people too. [QUOTE]

I would be very cautious with using colloidal silver. Very little legitimate research has been done on the effects of colloidal silver in humans, let alone reptiles. Keep in mind that the websites you listed make lots of claims but don't provide any good references - the few articles that are mentioned focus on in-vitro antimicrobial effects (in a test tube) and don't deal at all with toxicity issues. As far as I'm aware the few peer-reviewed studies that exist have failed to find any benefits and have concluded that the risks certainly outweigh the benefits. Argyria is a very real risk with colloidal silver, not just powdered silver.

If you're interested here are some articles you might want to take note of:

Gulbranson et al. Argyria following the use of dietary supplements containing colloidal silver protein. Cutis. 2000 Nov;66(5):373-4

Wadhera A, Fung M. Systemic argyria associated with ingestion of colloidal. Dermatol Online J. 2005 Mar 1;11(1):12

Fung MC, Bowden DL. Silver products for medical indications: risk-benefit assessment. J Toxicol Clin Toxicol. 1996;34(1):119-26