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An Empirical Analysis of Demand for and Supply of Prescription Drugs

Research Project

Project/Area Number 20530212
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied economics
Research InstitutionAoyama Gakuin University (2008, 2010)
Keio University (2009)

Principal Investigator

TOSHIAKI Iizuka  Aoyama Gakuin University, 大学院・経済学研究科, 教授 (00406810)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords後発医薬品 / ジェネリック / 産業組織 / 医療経済
Research Abstract

I examined three issues related to the supply of and demand for generic pharmaceuticals. I find that: 1) financial incentives to dispense generics increase generic adoption, but their impact is limited under the current pricing rule in Japan. 2) As in other markets, brand revenues explain generic entry, but the number of entrants is also sensitive to the prescription pattern driven by the price regulation and healthcare system unique in Japan. 3) Prior to 2010, government policies did not provide proper incentives for pharmacies to boost generic substitution.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (27 results)

All 2011 2010 2009 2008 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (21 results) Remarks (2 results)

  • [Journal Article] Generic Entry in a Regulated Pharmaceutical Market2009

    • Author(s)
      Toshiaki Iizuka
    • Journal Title

      Japanese Economic Review 60(1)

      Pages: 63-81

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Generic Drug Market in Japan : Will it Finally Take Off?

    • Author(s)
      Iizuka T., K. Kubo
    • Journal Title

      Health Economics, Policy and Law

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Generic Entry in a Regulated Pharmaceutical Market

    • Author(s)
      Iizuka T.
    • Journal Title

      Japanese Economic Review 60(1)

      Pages: 63-81

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Generic Drug Market in Japan : Will it Finally Take Off?

    • Author(s)
      Iizuka, T, K.Kubo
    • Journal Title

      Health Economics, Policy and Law

      Volume: 掲載決定

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Doctor-patient agency relationship and diffusion of generic pharmaceuticals2011

    • Author(s)
      飯塚敏晃
    • Organizer
      関西学院大学産業組織ワークショップ
    • Place of Presentation
      関西学院大学(大阪,梅田)
    • Year and Date
      2011-03-04
    • Related Report
      2010 Final Research Report
  • [Presentation] Doctor-patient agency relationship and diffusion of generic pharmaceutical2011

    • Author(s)
      飯塚敏晃
    • Organizer
      関西学院大学産業組織ワークショップ
    • Place of Presentation
      関西学院大学(大阪,梅田)
    • Year and Date
      2011-03-04
    • Related Report
      2010 Annual Research Report
  • [Presentation] Doctor-patient agency relationship and diffusion of generic pharmaceuticals2010

    • Author(s)
      飯塚敏晃
    • Organizer
      東京大学マイクロワークショップ
    • Place of Presentation
      東京大学
    • Year and Date
      2010-12-04
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] なぜ後発医薬品が選択されないのか(経済学的観点からみた現状と今後)2010

    • Author(s)
      飯塚敏晃
    • Organizer
      医療経済研究機構
    • Year and Date
      2010-09-17
    • Related Report
      2010 Final Research Report
  • [Presentation] なぜ後発医薬品が選択されないのか(経済学的観点からみた現状と今後)2010

    • Author(s)
      飯塚敏晃
    • Organizer
      医療経済研究会
    • Place of Presentation
      医療経済研究機構
    • Year and Date
      2010-09-17
    • Related Report
      2010 Annual Research Report
  • [Presentation] なぜジェネリック医薬品が選択されないのか2009

    • Author(s)
      飯塚敏晃
    • Organizer
      第30回日本臨床薬理学会年会
    • Place of Presentation
      横浜
    • Year and Date
      2009-12-05
    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Presentation] Financial Incentives, Agency Problems, and the Choice of Generic Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      Academia Sinica
    • Place of Presentation
      台湾
    • Year and Date
      2009-11-07
    • Related Report
      2009 Annual Research Report
  • [Presentation] Financial Incentives, Agency Problems, and the Choice of Generic Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      The Tri-Country Joint Health Economics Symposium
    • Place of Presentation
      国立台湾大学、台湾
    • Year and Date
      2009-11-06
    • Related Report
      2009 Annual Research Report
  • [Presentation] Agency Relationship and Diffusion of Technology: Evidence from Post-patent Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      Far East & South Asia Meeting of the Econometric Society
    • Place of Presentation
      東京大学
    • Year and Date
      2009-08-03
    • Related Report
      2010 Final Research Report
  • [Presentation] Agency Relationship and Diffusion of Technology : Evidence from Post-patent Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      Far East & South Asia Meeting of the Econometric Society
    • Place of Presentation
      東京大学
    • Year and Date
      2009-08-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] Agency Relationship and Diffusion of Technology: Evidence from Post-patent Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      7th Word Congress on Health Economics
    • Place of Presentation
      北京国際コンベンションセンター(中国)
    • Year and Date
      2009-07-13
    • Related Report
      2010 Final Research Report
  • [Presentation] Agency Relationship and Diffusion of Technology : Evidence from Post-patent Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      7th Word Congress on Health Economics
    • Place of Presentation
      北京国際コンベンションセンター
    • Year and Date
      2009-07-13
    • Related Report
      2009 Annual Research Report
  • [Presentation] Financial Incentives, Agency Problems, and the Choice of Generic Pharmaceuticals2009

    • Author(s)
      飯塚敏晃
    • Organizer
      公共経済学セミナー
    • Place of Presentation
      慶應大学
    • Year and Date
      2009-04-10
    • Related Report
      2009 Annual Research Report
  • [Presentation] Agency Relationship and the Choice of Generic Pharmaceuticals2008

    • Author(s)
      飯塚敏晃
    • Organizer
      香港科学技術大学セミナー
    • Place of Presentation
      香港科学技術大学(香港)
    • Year and Date
      2008-12-06
    • Related Report
      2010 Final Research Report
  • [Presentation] Agency Relationship and the Choice of Generic Pharmaceuticals2008

    • Author(s)
      飯塚 敏晃
    • Organizer
      香港科学技術大学セミナー
    • Place of Presentation
      香港科学技術大学
    • Year and Date
      2008-12-06
    • Related Report
      2008 Annual Research Report
  • [Presentation] When and When not Generic Drugs Are Prescribed2008

    • Author(s)
      飯塚 敏晃
    • Organizer
      医療経済学会
    • Place of Presentation
      京都大学
    • Year and Date
      2008-07-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] Agency Relationship and the Choice of Generic Pharmaceuticals2008

    • Author(s)
      飯塚 敏晃
    • Organizer
      東京大学経済学部セミナー
    • Place of Presentation
      東京大学経済学部
    • Year and Date
      2008-07-14
    • Related Report
      2008 Annual Research Report
  • [Presentation] Agency Relationship and the Choice of Generic Pharmaceuticals2008

    • Author(s)
      飯塚敏晃
    • Organizer
      米国医療経済学会
    • Place of Presentation
      デユーク大学(米国)
    • Year and Date
      2008-06-22
    • Related Report
      2010 Final Research Report
  • [Presentation] Agency Relationship and the Choice of Generic Pharmaceuticals2008

    • Author(s)
      飯塚 敏晃
    • Organizer
      米国医療経済学会
    • Place of Presentation
      デューク大学(米国)
    • Year and Date
      2008-06-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] When and When not Generic Drugs Are Prescribed2008

    • Author(s)
      飯塚 敏晃
    • Organizer
      日本経済学会
    • Place of Presentation
      東北大学
    • Year and Date
      2008-05-13
    • Related Report
      2008 Annual Research Report
  • [Presentation] Agency Relationship and the Choice of Generic Pharmaceuticals2008

    • Author(s)
      飯塚 敏晃
    • Organizer
      慶應大学経済学部セミナー
    • Place of Presentation
      慶應大学経済学部
    • Year and Date
      2008-04-30
    • Related Report
      2008 Annual Research Report
  • [Remarks] ホームページ等

    • URL

      http://sites.google.com/site/iizukaweb/profile

    • Related Report
      2010 Final Research Report
  • [Remarks]

    • URL

      http://sites.google.com/site/iizukaweb/profile

    • Related Report
      2010 Annual Research Report

URL: 

Published: 2008-04-01   Modified: 2016-04-21  

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