FOR IMMEDIATE RELEASE
May 19, 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

Eisai U.S.A. Inc. (Headquarters: New Jersey, U.S.A.), a wholly-owned subsidiary of Eisai Co., Ltd. (Headquarters: Tokyo, Japan), resolved its dissolution at the Board held on May 18, 2006 (U.S. Eastern time). Details are noted below.

1 .	Reason for Dissolution
	This dissolution was resolved because Eisai U.S.A. Inc. had been virtually a dormant company.
2 .	Outline of the Subsidiary Dissolved
	Company Name: Eisai U.S.A. Inc. Headquarters Location: 3 University Plaza, Hackensack, New Jersey Representative: Mr. Mike de la Montaigne (President) Date of Incorporation: October 1, 1981 Capital: US$ 29,500 thousand
3 .	Schedule for Liquidation
	It is scheduled in June 2006.
4 .	Future Prospects
	The dissolution will have little influence on the business results of Eisai Co., Ltd.