FOR IMMEDIATE RELEASE
May 16, 2006

	Listed Stock Name:	Eisai Co., Ltd.
	Director and President & CEO:	Mr. Haruo Naito
	Headquarters:	4-6-10 Koishikawa Bunkyo-ku, Tokyo
	Securities Code:	4523
	Listed Locations:	First Sections of the Tokyo Stock Exchange & the Osaka Securities Exchange
	Inquiries:	Mr. Hiroyuki Mitsui Vice President Corporate Communications Phone 81-3-3817-5085

The Board of Directors of Eisai Co., Ltd. (hereinafter referred to as "Company") resolved at a meeting on May 16, 2006 to propose at the 94th Ordinary General Meeting of Shareholders to be held on June 23, 2006 "the partial amendments to the Articles of Incorporation" as follows.

1 .	Reasons for the amendments
	Reasons for the amendments are specified in each Article. The outlines are as follows.
	(1)	Additions, deletions, and changes in expressions and presentations of Articles pursuant to the Corporate Code (Code No. 86 in 2005)
	(2)	Revisions of the entries in the object of the Company in accordance with the Corporate Code
	(3)	Modifications and shifts of Articles in order to align with other similar expressions and presentations
2 .	Details of the proposed amendments (pages 47-49) are as follows:
	Details (PDF 367KB)