Annavarapu EnterprisesOn industrial poultry farms, a range of antibiotics and additives is often added to poultry feed and water. FIn 2011, the pharmaceutical company Pfizer temporarily suspended use of the poultry drug Roxarsone after FDA reports showing that the arsenical compounds in the drug may break down into inorganic arsenic, a toxin that can produce skin lesions, respiratory irritation, and several types of cancer in exposed persons, Fand may leach into local water supplies or remain in chicken tissue after slaughter. F FThe effects of chronic low arsenic exposure are not well known, but studies have indicated that even low level exposure may contribute to endocrine and cognitive deficits. F FAlthough Roxarsone use has been suspended, there are several other arsenical drugs in use that have the possibility of exposing consumers to toxic forms of arsenic.