默沙东公司表示，去年"欣流"的销售额达到43亿美元。 现在，它已经被美国数以百万计的病人使用。"

With sales of $4.3 billion last year, Singulair is used by millions of patients in the U.S, according to Merck..

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默沙东公司经理强调，FDA的调查只是基于一些报道，并没有临床研究做基础。而这也正是评估药品安全的标准。

Merck officials stressed that the FDA's inquiry is based on reports, not clinical studies — which are the standard tool for evaluating drug safety.

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