Demand Effects of Recent Changes in Prescription Drug Promotion

Meredith B. Rosenthal, Harvard School of Public Health
Ernst R. Berndt, Massachusetts Institute of Technology and NBER
Julie M. Donohue, Harvard Medical School
Arnold M. Epstein, Harvard School of Public Health
Richard G. Frank, Harvard Medical School and NBER

Abstract

The release of clarified Food and Drug Administration (FDA) guidelines and independent changes in consumer behavior provide an opportunity to study the effects of direct-to-consumer advertising (DTCA) in the prescription drug market alongside the effects of various physician-oriented promotions. We examine the effects of DTCA and detailing for brands in five therapeutic classes of drugs, using monthly aggregate U.S. data from August 1996 through December 1999. In terms of impact of DTCA on demand, we provide evidence on two issues: (1) do increases in DTCA increase the market size of an entire therapeutic class? and (2) does DTCA increase within-class market share of advertised drugs? Our findings suggest that, for these classes of drugs, DTCA has been effective primarily through increasing the size of the entire class. Overall, we estimate that 13 to 22 percent of the recent growth in prescription drug spending is attributable to the effects of DTCA.

Recommended Citation

Meredith B. Rosenthal, Ernst R. Berndt, Julie M. Donohue, Arnold M. Epstein, and Richard G. Frank (2003) "Demand Effects of Recent Changes in Prescription Drug Promotion," Forum for Health Economics & Policy: Vol. 6: (Frontiers in Health Policy Research), Article 2.
http://www.bepress.com/fhep/6/2

 
 
 
 

ISSN: 1558-9544 ©1999-2009 The Berkeley Electronic Press™ All rights reserved.

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