Although the Food and Drug Administration said studies of the risk are too contradictory to say whether Avandia is riskier than other Type 2 diabetes meds, it went ahead with the warning label, pending further research.
Avandia manufacturer GlaxoSmithKline PLC has agreed to begin a major new study comparing that drug to another active blood sugar-lowering medication to better understand if there is a risk.
About 1 million Americans with Type 2 diabetes use Avandia. It helps control blood sugar by increasing the body's sensitivity to insulin.
--Nina M. Lentini