Study: Plavix warning may not be necessary – one doctor explains why and what to do if you take the drug

Today, an AM housecall that affects 40 million Americans. That's how many take Plavix, the anti-clotting drug used to prevent heart attacks and strokes.

Almost two years ago, the Food and Drug Administration slapped it with its strongest black-box warning. But now, a new study in the Journal of the American Medical Association says that warning might not be necessary.

Today on American Morning, Dr. Ajay Kirtane, cardiologist at New York Presbyterian hospital and Columbia University Medical Center, explains why the warning may no longer be necessary.