ROXARSONE VOLUNTARY SUSPENSION. “In July 2011, Pfizer suspended sale of roxarsone in the U.S. in response to a study by the … (FDA); the FDA found that roxarsone use was associated with elevated levels of inorganic arsenic in chicken livers. An FDA press release stated that the findings raised “concerns of a very low but completely avoidable exposure to a carcinogen.” The voluntary suspension …”
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