Drug maker Pfizer Inc. (PFE) is reportedly being investigated by federal prosecutors in the western district of Oklahoma, according to reports.
The criminal investigation is reportedly related to the pharmaceutical behemoth’s Wyeth unit, and its promotional tactics for the drug Rapamune, according to the Wall Street Journal, which cited a regulatory filing.
Rapamune is used as an immunosuppressant agent after organ transplants in order to prevent the patient’s body from rejecting the transplanted organ.
Shares of Pfizer fell 14 cents or 0.79% in Friday’s session, closing at $17.55 a share. The stock was up 6 cents in after-hours trading.
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