Tamiflu safety data withheld

Updated 20 January 2012.

Despite billions of global health dollars spent on the flu drug oseltamivir, its manufacturer has yet to release data proving the drug is safe and effective, Cochrane researchers say.

In a review published Wednesday, researchers from five countries said there were "substantial problems with the design, conduct and availability of information" from many of the published trials on oseltamivir (Tamiflu).

"The mechanism of action of oseltamivir should be independently researched … until a clear picture of its effects on influenza complications, transmission and action on

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