Penny Eaters Beware!
1 Section of Emergency Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, AZ 85724
To the Editor.
Acute toxicity may complicate the ingestion of US pennies minted since October 1982. In December 1984, an 11-lb dog died from multisystem failure attributed to markedly elevated serum and tissue levels following the ingestion of two such coins (The Arizona Daily Star, Dec 4, 1984, pp 1-2).
The mostly copper alloy one-cent piece was replaced in 1982 by one with a zinc core and a thin copper jacket. Although the copper is relatively inert, a break in the copper casing in an acid environment or prolonged acid exposure of an intact coin will cause dissolution and absorption of the zinc (The Arizona Daily Star, Dec 4, 1984, pp 1-2).




