In 2018, the U.S. Department of Health and Human Services (HHS) released a report detailing Medicare Part D spending on brand-name drugs that were also available as multi-source generics. At the top of that list was a popular medication known as Nexium, for which Medicare spent $1.06 billion (pre-rebate) in 2016, despite its manufacturer losing its patent exclusivity in early 2015.
Motivated to understand the root cause of the elevated spending on this high-profile brand-name drug in 2016, we started to research the story of Nexium, and the old drug from which it was derived, Prilosec. We struggled to find a comprehensive overview of the entire Nexium story that was supported by data and analytics needed to fully understand its many moving parts. To fill this void, we received funding from Waxman Strategies through a grant provided by Arnold Ventures to complete and publish this work. Our goal was simply to provide a full data-driven analysis of the Nexium story to help educate lawmakers and the general public on how a drug commonly viewed as a line extension first became a blockbuster drug for AstraZeneca and then exposed a host of warped incentives across the U.S. drug supply chain that continue to be exploited today. The information in this report can serve as the foundation for a more constructive debate on what regulation is needed to help reduce waste in the drug supply chain without sacrificing innovation.
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