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Roxarsone withdrawn from Canadian market

12-07-2011 | |

Pfizer Animal Health’s Canadian arm and Winnipeg veterinary drug distributor Dominion Veterinary Laboratories will voluntarily suspend sales of roxarsone, as sold in the products 3-Nitro-20 and Super Nitro-12, effective Aug. 8.

Pfizer’s Alpharma subsidiary in the US planned to take much the same action starting early this month in response to a request from the US Food and Drug Administration (FDA), citing its own study of the drug.
 
Arsenic content
According to a notice from Health Canada’s Veterinary Drugs Directorate, the FDA study had found inorganic arsenic, a known carcinogen, at higher levels in the livers of chickens treated with the Nitro drugs, compared with untreated chickens.
 
Health Canada said it had reviewed the FDA study and agrees with its conclusion that the levels of inorganic arsenic involved were "very low" and posed no immediate health risk to people eating meat from birds treated with the drugs.
 
Rather, Health Canada said, the suspension of sales is "a precautionary measure to remove any avoidable exposure to very low levels of inorganic arsenic in chickens treated with roxarsone."

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Ziggers
Dick Ziggers Former editor All About Feed
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