Colloidal & Ionic Silver & Nanosilver, Cautions

According to the Food and Drug Administration (FDA), there are no safety or effectiveness data on dietary supplements containing colloidal silver.

Pregnant women should not use colloidal silver as it can cause developmental abnormalities in the fetus.

Reported (Oral): Accumulation of silver in the body causes argyria, a bluish-gray discoloration of the skin, which is typically permanent.
Argyria following the use of dietary supplements containing colloidal silver protein. Cutis 2000;66(5):373-374.
Argyria secondary to ingestion of homemade silver solution. J Am Acad Dermatol. 2005 Aug;53(2 Suppl 1):S105-7.
A case of argyria after colloidal silver ingestion. J Cutan Pathol. 2006 Dec;33(12):809-11.
A case of generalized argyria after ingestion of colloidal silver solution. Am J Ind Med. 2009 Mar;52(3):246-50.
Three systemic argyria cases after ingestion of colloidal silver solution. Int J Dermatol. 2010 Oct;49(10):1175-7.
Argyria associated with colloidal silver supplementation. Int J Dermatol2003;42(7):549.
Reported (Oral): Myoclonic seizures were reported in a 75-year-old man following self-medication with silver . Myoclonic status epilepticus following repeated oral ingestion of colloidal silver. Neurology 2004;62:1408-10.
Reported (Topical): Topical use of silver nitrate for burns may cause methemoglobinemia.

Exposure to high concentrations of silver, such as in an industrial setting, leads to systemic toxicity