The aim of this investigation was to evaluate the marketing practices, beliefs and health claims regarding the use of colloidal silver in Finland. Contents of three company websites selling colloidal silver were reviewed, and the claims used in the marketing of colloidal silver were compared to the scientific information about silver. In Facebook posts and discussion about colloidal silver were analyzed.
In Finland, the marketing of colloidal silver products on websites selling the products did not follow the regulations of authorities; several scientifically unfounded claims about the efficacy and medical use of colloidal silver were found. After the Finnish Broadcasting Company (Yle) documentary and an intervention by authorities, contents of the websites were changed, but still questionable information and misleading claims could be found. In the analyzed Facebook groups attitudes towards medical use of colloidal silver were uncritically positive, internal use was highly promoted and the restrictions of use were considered unjustified.
The authors concluded that the use of quackery products such as colloidal silver can be dangerous, and their use and marketing should be controlled and restricted.
The authors stress that silver nanoparticles (AgNPs) are potentially toxic due to their small size and Ag+-release capabilities, and the use of colloidal silver products containing AgNPs can cause a wide variety of adverse effects such as argyria.
WebMD cautions that despite promoters’ claims, silver has no known function in the body and is not an essential mineral supplement. Colloidal silver products were once available as over-the-counter drug products. In 1999 the U.S. Food and Drug Administration (FDA) ruled that these colloidal silver products were not considered safe or effective. Colloidal silver products marketed for medical purposes or promoted for unproven uses are now considered “misbranded” under the law without appropriate FDA approval as a new drug. There are currently no FDA-approved over-the-counter or prescription drugs containing silver that are taken by mouth. However, there are still colloidal silver products being sold as homeopathic remedies and dietary supplements.
On this blog, we have discussed that colloidal silver is nevertheless marketed aggressively by crooks (see here and here). The message that emerges from all this seems clear: do not fall for the plethora of false claims made by irresponsible entrepreneurs who want your money and risk your health. Keep your money and health by staying away from colloidal silver and similar SCAMs.