The FDA said it was difficult to show that deaths associated with Darvon use were not, in fact, overdoses.

FDA表示死亡是因服用达尔丰还是因为事实上的药物过量所致很难辨别。

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The agency says 10 million patients took Darvon or a generic version in 2009 and 18 million prescriptions were dispensed.

FDA同时表示2009年约有1000万美国患者在服用达尔丰或者其仿制药，开具了1800万的处方。

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