Don't waste your money or endanger your health.
http://nccam.nih.gov/health/alerts/silver/index.htm
Silver has no known function in the body.
Silver is not an essential mineral supplement or a cure-all and should not be promoted as such.
Claims that there can be a "deficiency" of silver in the body and that such a deficiency can lead to disease are unfounded.
Claims made about the effectiveness of colloidal silver products for numerous diseases are unsupported scientifically.
Colloidal silver products can have serious side effects
Laboratory analysis has shown that the amounts of silver in supplements vary greatly, which can pose risks to the consumer.
http://www.quackwatch.org/01Quackery.../silverad.html