NBER

Stephen Murphy

Massachusetts Institute of Technology

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org
Institutional Affiliation: Massachusetts Institute of Technology

NBER Working Papers and Publications

August 2017The Generic Drug User Fee Amendments: An Economic Perspective
with Ernst R. Berndt, Rena M. Conti: w23642
Regulation can influence the structure, conduct and performance of consumer product markets and the structure of product markets can influence regulation. Since the vast majority of prescription drugs consumed by Americans are generic, the structure of the U.S. generic prescription drug market is of wide interest. The supply of prescription drugs in the U.S. is also heavily regulated by the U.S. Food and Drug Administration (FDA). We describe events leading up to the passage and implementation of the Generic Drug User Fee Amendments in 2012 (GDUFA I), and compare its FDA commitments, provisions, goals and fee structure to that of the 1992 Prescription Drug User Fee Act (PDUFA) for branded drugs. Although GDUFA I expires September 30, 2017, reauthorization for GDUFA II is currently under...

Published: Ernst R Berndt & Rena M Conti & Stephen J Murphy, 2018. "The generic drug user fee amendments: an economic perspective," Journal of Law and the Biosciences, vol 5(1), pages 103-141.

July 2017The Landscape of US Generic Prescription Drug Markets, 2004-2016
with Ernst R. Berndt, Rena M. Conti: w23640
Since the 1984 passage of the Waxman-Hatch Act, generic prescription drugs have become central to disease treatment and generic drug entry and price competition has been vigorous in the U.S. Nonetheless, recent policy concern has focused on potential supply inadequacy and price increases among selected generic drugs. Details regarding the supply of generic drugs throughout the product life cycle are surprisingly unstudied. Here, we examine manufacturer entry, exit, the extent of competition and the relationship between supply structure and inflation adjusted prices among generic drugs. Our empirical approach is descriptive and reduced form, following recent innovations on the older structure-conduct-performance tradition. We employ quarterly national data on quantities, wholesale dollar sa...

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