|MadSci Network: Biochemistry|
A search of the medical literature did not reveal any scientific studies that support the effectiveness of colloidal silver preparations. Colloidal silver is potentially harmful and, in fact, the Food and Drug Administration has issued a Final Rule that "all over-the-counter drug products containing colloidal silver or silver salts are not recognized as safe and effective and are misbranded." (To read the Talk Paper that explains the Final Rule, see www.fda.gov/bbs/topics/ANSWERS/ANS00971.html ). "According to the Final Rule, a colloidal silver product for any drug use will first have to be approved by FDA under the new drug application procedures. The Final Rule classifies colloidal silver products as misbranded because adequate directions cannot be written so that the general public can use these drugs safetly for their intended purposes. They are also misbranded when their labeling falsely suggests that there is substantial scientific evidence to establish that the drugs are safe and effective for their intended uses. The indiscriminate use of colloidal silver solutions has resulted in cases of agryria, a permanent blue-gray discoloration of the skin and deep tissues." (FDA Talk Paper, FDA Issues Final Rule on OTC Drug Products Containing Colloidal Silver). This ruling by FDA means that companies selling colloidal silver may be subject to legal action.
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