What's with people eating silver? [View all]

http://nccam.nih.gov/health/silver

Colloidal silver consists of tiny silver particles suspended in liquid. Scientific evidence does not support the use of colloidal silver to treat any disease, and serious, irreversible side effects can result from its use.

Colloidal silver products are often marketed as dietary supplements with various unproven health-related claims. This fact sheet provides a general overview of colloidal silver and suggests sources for additional information.
Alert from the FDA

The U.S. Food and Drug Administration (FDA) does not consider colloidal silver to be safe or effective for treating any disease or condition and has issued an advisory regarding its safety. Colloidal silver can cause serious side effects, such as argyria.
Key Points

Colloidal silver is not safe or effective for treating any disease or condition.
Colloidal silver can cause serious side effects. The most common is argyria, a bluish-gray discoloration of the skin, which is usually not treatable or reversible.
The FDA and the Federal Trade Commission have taken action against a number of companies (including some companies that sell products over the Internet) for making drug-like claims about colloidal silver products.
Tell all your health care providers about any complementary health practices you use. Give them a full picture of what you do to manage your health. This will help ensure coordinated and safe care.