I trust manufacturers much more than any interest group. That's because when the drug fails due to their having not informed folks they can be sued. Interest groups can't.
Are you referring to this?
That heart failure is treatable. It's from fluid overload. If the patient is symptomatic with shortness of breath, that's congestive heart failure from excess fluid in the lungs. Stop the drug and diurese the patient. Avandia is one of a number of oral agents for type 2 diabetics. All of them can have adverse effects. Most patients want to max out on oral therapy before they are forced to take insulin injections.
All of the patients in the study were treatable in the study, IIRC. I believe there was at least one study of metformin to prevent diabetes in folks with impaired fasting glucose or abnormal glucose tolerance tests. IIRC, it also worked. As I said before on this thread, I would go for diet and exercise before any drugs.