WASHINGTON - Federal investigators warned nearly five years ago that the diabetes drug Avandia might be causing heart failure, according to an internal government memo released Tuesday by a consumer group.
Investigators also raised concerns about Actos, a similar drug used to treat Type 2 diabetes.
Separately, in fast-moving developments in the latest drug safety investigation, a senior Republican senator said he learned that the Food and Drug Administration's safety office recommended the strongest possible warning for Avandia -- only to be overruled.
"The FDA didn't take that advice," said Sen. Charles Grassley, R-Iowa, a critic of the agency. "Instead, the warning about congestive heart failure risks with this drug is currently buried."
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Tuesday, June 12
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