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Consumer Reports lists colloidal silver as a "supplement to avoid", describing it as "likely unsafe". [90] The Los Angeles Times stated that "colloidal silver as a cure-all is a fraud with a long history, with quacks claiming it could cure cancer, AIDS, tuberculosis, diabetes, and numerous other diseases". [91]
Argyria and staining: Ingested silver or silver compounds, including colloidal silver, can cause a condition called argyria, a discoloration of the skin and organs.In 2006, there was a case study of a 17-year-old man, who sustained burns to 30% of his body, and experienced a temporary bluish-grey hue after several days of treatment with ...
Its principal use is for the production of silver powder for use in microelectronics. It is reduced with formaldehyde, producing silver free of alkali metals: [51] Ag 2 CO 3 + CH 2 O → 2 Ag + 2 CO 2 + H 2. Silver carbonate is also used as a reagent in organic synthesis such as the Koenigs–Knorr reaction.
Some silver oxide powder.. Silver is a relatively unreactive metal, although it can form several compounds. The common oxidation states of silver are (in order of commonness): +1 (the most stable state; for example, silver nitrate, AgNO 3); +2 (highly oxidising; for example, silver(II) fluoride, AgF 2); and even very rarely +3 (extreme oxidising; for example, potassium tetrafluoroargentate(III ...
Quackwatch states that colloidal silver dietary supplements have not been found safe or effective for the treatment of any condition. [149] Ingestion of ionic silver can cause a rare condition called argyria in which silver is reduced to elemental form inside tissues, causing an irreversible blue/gray complexion. [150]
On at least three episodes Oz promoted colloidal silver as a treatment for cold symptoms, wounds, viruses, and bacteria, but there is no evidence at all to support any medical uses of it. [26] Despite Oz's recommendations, colloidal silver does not treat or prevent any disease or condition, and it is not proven safe to consume. [27]
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