Publications [#238179] of Henry G. Grabowski

Journal Articles

1. with Saha, A; Grabowski, Henry; Birnbaum, H; Greenberg, P; Bizan, O, Generic Competition in the U.S. Pharmaceutical Industry, International Journal of the Economics of Business, vol. 13 no. 1 (February, 2006), pp. 15-38, Informa UK Limited (Vol. 13, Issue 1, pp. 15-38.) [repository], [doi]
   (last updated on 2026/01/17)

   Abstract:
   We develop a simultaneous equations estimation framework to understand the interactions among generic entry, prices, and market shares. We base our estimates on a panel data sample of 40 brand-name drugs that first experienced generic competition during the period July 1992-January 1998. We find that generic share and price are simultaneously determined, while the number of generic entrants is a key determinant of generic market share and the generic-to-brand price ratio. In addition, we find generic competition to be particularly intense for blockbuster drugs, which experience significantly more generic entrants, price erosion, and generic penetration than other drugs.