FDA Rules Against Colloidal Silver
Date: Thu Aug 26, 1999 6:22 pm
Subject: Re: FDA Rules Against Colloidal Silver
Wednesday August 18 5:46 PM ET
FDA warns about silver in over-the-counter drugs
NEW YORK, Aug 18 (Reuters Health) -- Over-the-counter drug products that contain
colloidal silver or
silver salts have not been shown to be safe or effective, announced the US Food
and Drug Administration
(FDA) on Tuesday.
The FDA also said that the general public cannot use these types of drugs safely
because adequate directions for the products
could not be written.
Products containing silver particles have been appearing in stores in recent
years, note FDA officials. Labels on these
products include claims that the products can treat adults and children for
diseases including AIDS, cancer, tuberculosis,
malaria, lupus, syphilis, scarlet fever, shingles, herpes, pneumonia, typhoid,
But FDA officials write that such products are misbranded ''when their labeling
falsely suggests that there is substantial
scientific evidence that the drugs are safe and effective for their intended
According to the FDA Final Rule issued Tuesday, ``a colloidal silver product for
any drug use will first have to be
approved by the FDA under the new drug application procedures.''
Use of colloidal silver solutions, where silver particles are suspended in a
gelatinous base, can result in argyria, ``a
permanent blue-gray discoloration of the skin and deep tissues,'' notes the FDA.
The products in question include colloidal silver ingredients and silver salts
such as silver proteins, mild silver protein,
strong silver protein, silver chloride, and silver iodide. The drugs are usually
in oral dosage form, but sometimes exist in
topical (to be applied to the skin) and even intravenous forms.