While colloidal silver generators offer consumers opportunities to produce colloidal silver, consumers cannot determine the safety or quality of the silver, and using colloidal silver carries significant health risks, states WebMD. In 1999, the U.S. Food and Drug Administration determined that over-the-counter colloidal silver products are unsafe and ineffective.
Colloidal silver is not safe to take orally, intravenously or topically. Silver is not an essential mineral for humans and does not serve any function in the body, notes WebMD. Vital organs including the brain, kidneys, liver and skin absorb silver, and significant damage can occur. Consumers using the product have developed argyria, a permanent bluish discoloration of the gums and skin. The mineral also triggers the body to produce excess melanin, and skin exposed to sunlight becomes discolored.