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Estimates Of The Price Elasticity Of Switching Between Branded And Generic Drugs

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  • Sabrina Terrizzi
  • Chad Meyerhoefer

Abstract

We estimate price elasticities of switching from branded to generic drugs for two widely used drugs: Prozac and Zocor. We find the price elasticity of switching varies by drug and is between 0.01 and 0.10. While elasticity estimates for Zocor are robust to the inclusion of controls for supply‐side factors, those for Prozac are not. Our results indicate consumers in managed care plans are most responsive to differences in out‐of‐pocket (OOP) cost, and we estimate that a 10% increase in the OOP cost difference between Zocor and generic Simvastatin increases an individual's probability of switching to the generic by approximately 0.3%. This would result in a modest total savings of $36,700 among our sample of 114,218 privately insured Zocor users. Our finding that individuals are relatively unresponsive to the lower prices caused by generic introduction implies that policies targeting supply‐side behavior are likely to have a larger effect on generic uptake than price‐based inducements. If generic‐uptake did occur immediately within the first 18 months after generic introduction, the total savings among individuals and insurance companies within our sample would be approximately $7 million for Zocor and $255,000 for Prozac. (JEL I11, I18)

Suggested Citation

  • Sabrina Terrizzi & Chad Meyerhoefer, 2020. "Estimates Of The Price Elasticity Of Switching Between Branded And Generic Drugs," Contemporary Economic Policy, Western Economic Association International, vol. 38(1), pages 94-108, January.
    • Handle: RePEc:bla:coecpo:v:38:y:2020:i:1:p:94-108
    DOI: 10.1111/coep.12430
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    References listed on IDEAS

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    1. Ernst Berndt & Murray Aitken, 2011. "Brand Loyalty, Generic Entry and Price Competition in Pharmaceuticals in the Quarter Century after the 1984 Waxman-Hatch Legislation," International Journal of the Economics of Business, Taylor & Francis Journals, vol. 18(2), pages 177-201.
    2. Richard G. Frank & David S. Salkever, 1997. "Generic Entry and the Pricing of Pharmaceuticals," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 6(1), pages 75-90, March.
    3. John Rizzo & Richard Zeckhauser, 2009. "Generic script share and the price of brand-name drugs: the role of consumer choice," International Journal of Health Economics and Management, Springer, vol. 9(3), pages 291-316, September.
    4. Paul Contoyannis & Jeremiah Hurley & Paul Grootendorst & Sung‐Hee Jeon & Robyn Tamblyn, 2005. "Estimating the price elasticity of expenditure for prescription drugs in the presence of non‐linear price schedules: an illustration from Quebec, Canada," Health Economics, John Wiley & Sons, Ltd., vol. 14(9), pages 909-923, September.
    5. Sotiris Vandoros, 2014. "Therapeutic Substitution Post‐Patent Expiry: The Cases Of Ace Inhibitors And Proton Pump Inhibitors," Health Economics, John Wiley & Sons, Ltd., vol. 23(5), pages 621-630, May.
    6. Andrea Coscelli, 2000. "The Importance of Doctors’ and Patients’ Preferences in the Prescription Decision," Journal of Industrial Economics, Wiley Blackwell, vol. 48(3), pages 349-369, September.
    7. Chad D. Meyerhoefer & Samuel H. Zuvekas, 2010. "New estimates of the demand for physical and mental health treatment," Health Economics, John Wiley & Sons, Ltd., vol. 19(3), pages 297-315, March.
    8. Leibowitz, Arleen & Manning, Willard G. & Newhouse, Joseph P., 1985. "The demand for prescription drugs as a function of cost-sharing," Social Science & Medicine, Elsevier, vol. 21(10), pages 1063-1069, January.
    9. Ching, Andrew T., 2010. "Consumer learning and heterogeneity: Dynamics of demand for prescription drugs after patent expiration," International Journal of Industrial Organization, Elsevier, vol. 28(6), pages 619-638, November.
    10. repec:bla:jindec:v:48:y:2000:i:3:p:349-69 is not listed on IDEAS
    11. Alan T. Sorensen, 2000. "Equilibrium Price Dispersion in Retail Markets for Prescription Drugs," Journal of Political Economy, University of Chicago Press, vol. 108(4), pages 833-862, August.
    12. Lundin, Douglas, 2000. "Moral hazard in physician prescription behavior," Journal of Health Economics, Elsevier, vol. 19(5), pages 639-662, September.
    13. Z. John Lu & William S. Comanor, 1998. "Strategic Pricing Of New Pharmaceuticals," The Review of Economics and Statistics, MIT Press, vol. 80(1), pages 108-118, February.
    14. Grabowski, Henry G & Vernon, John M, 1992. "Brand Loyalty, Entry, and Price Competition in Pharmaceuticals after the 1984 Drug Act," Journal of Law and Economics, University of Chicago Press, vol. 35(2), pages 331-350, October.
    15. Grabowski, Henry & Vernon, John, 1986. "Longer Patents for Lower Imitation Barriers: The 1984 Drug Act," American Economic Review, American Economic Association, vol. 76(2), pages 195-198, May.
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    More about this item

    JEL classification:

    • I11 - Health, Education, and Welfare - - Health - - - Analysis of Health Care Markets
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health

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