For Immediate Release

Company name: DAIICHI SANKYO COMPANY, LIMITED
Representative: Takashi Shoda, President and Representative Director
(Code no.: 4568, First Section, Tokyo, Osaka and Nagoya Stock Exchanges)
Please address inquiries to Toshio Takahashi, Corporate Officer in Charge,
Corporate Communications Department
Telephone: +81-3-6225-1126
http://www.daiichisankyo.co.jp/

DAIICHI SANKYO Subsidiaries Announce Early Retirement Program

Tokyo, September 29, 2006 - DAIICHI SANKYO subsidiaries Sankyo Co., Ltd. (President: Yasuhiro Ikegami, hereafter Sankyo) and Daiichi Pharmaceutical Co., Ltd. (President: Kiyoshi Morita, hereafter Daiichi Pharmaceutical), announced today that they are offering an early retirement program.

The early retirement program is part of a workforce optimization policy set to attain the highest level of operational efficiency in the industry and build a solid earnings base. Daiichi Pharmaceutical and Sankyo will also provide assistance to employees taking this opportunity to make a career change in the context of life planning.

The early retirement program is available to all employees of Daiichi Pharmaceutical and Sankyo under 60 years of age as of February 28, 2007. There is no limit to the number of applications. Applications will be accepted from December 4 to December 15, 2006, and the retirement date will be February 28, 2007. Those taking up the early retirement offer will receive an augmented retirement allowance plus assistance in finding new employment.

The additional retirement allowance expenses arising from the early retirement program are due to be booked as an extraordinary loss in the fiscal year ended March 2007. The estimated impact on earnings will be disclosed at a later date when the number of applicants is known.