OxyContin easily outsells brand-name competitors, but 84% of painkiller prescriptions are filled by generics companies like Watson Pharmaceuticals and Covidien.
Company: Purdue Pharma
U.S. prescriptions: 6.7 million
Sales: $3.1 billion
NEXT: Vicodin
By Katherine Eban, contributor - Last updated November 09 2011: 6:34 AM ET
