Since 1 January 2010, colloidal silver is no longer considered a dietary supplement by the European Union. In France, all manufacturers of colloidal silver have registered it as a cosmetic product, which implies that it can only be used externally. After all, who would drink a cosmetic product?

In many other countries, such as Switzerland, it is considered a dietary supplement, so it can be ingested.

There is a page with more information on this topic.