The Bottom Line The patent expiration cliff of many blockbuster drugs makes it unlikely that many drugs in the future will log sales above $10 billion annually. However, $1 billion in annual sales is ... more 
The Bottom Line The patent expiration cliff of many blockbuster drugs makes it unlikely that many drugs in the future will log sales above $10 billion annually. However, $1 billion in annual sales is all that is needed to technically qualify a drug as a blockbuster drug. Many of the above prescription medications should continue to achieve these sales levels in the near future despite the fact that many are already seeing generic competition. less 
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Thu, May 24, 2012 4:00 AM EDT