Cephalon Quarterly Conference Call Invitation First Quarter 2008 Earnings Conference Call Thursday, May 1, 2008, 5:00 p.m. U.S. EDT

FRAZER, Pa., March 31 /PRNewswire-FirstCall/ -- Cephalon, Inc. has scheduled its regular quarterly earnings conference call covering first quarter 2008 results for 5:00 p.m. EDT on Thursday, May 1, 2008.

May 1, 2008 Schedule 4:10 p.m. EDT Q1 2008 results will be distributed by PRNewswire 4:50 p.m. EDT To participate in the conference call, dial 913-981-5581 and refer to Conference Code Number 7561641 5:00 p.m. EDT Conference call begins promptly. Simultaneous Webcast

Investors can listen to the call live by logging on to the company's website at http://www.cephalon.com/ and clicking on "Investor Information," then "Webcast." Please click on the link and follow the prompts for registration and access.

If you are unable to listen to the live broadcast, an audio or webcast replay of the call will be available approximately two hours after the event until Midnight EDT, May 14, 2008. To listen to the audio replay, dial 719-457-0820 and use the Conference Code Number 7561641.

Additional information presented on the conference call may be made available on the Investor Information page of the company's website.

Cephalon, Inc.

CONTACT: Robert S. (Chip) Merritt of Cephalon, Inc., 1-610-738-6376,
cmerritt@cephalon.com

Web site: http://www.cephalon.com/

Company News On-Call: http://www.prnewswire.com/comp/134563.html