Democratic Sen. Claire McCaskill says drug giant is "stonewalling" her opioid investigation


The world's largest generic drug maker, Teva Pharmaceutical Industries, has refused to fully cooperate with a Senate investigation into whether major opioid manufacturers contributed to the deadly drug epidemic, according to Sen. Claire McCaskill, D-Mo., who is leading the Senate probe. Teva has answered some of McCaskill's questions, providing the Senate committee with general information about its efforts to track and report suspicious orders for its opioid prescriptions, according to a series of letters between McCaskill and the company.



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