Spring Valley, New York, January 21, 2004 — Pharmaceutical Resources, Inc. (NYSE:PRX), will make a presentation on Wednesday, January 28 at 12:30pm EST at the Piper Jaffray Health Care Conference. The conference will be held at the Pierre Hotel in New York City.

You may link to the conference directly through the Piper Jaffray Web site http://www.gotoanalysts.com/hccwebcast or through the Par Pharmaceutical Web site. A replay will be available at the same link address for up to 30 days after the conference.

Pharmaceutical Resources, Inc., a holding company, develops, manufactures and distributes generic pharmaceuticals through its principal subsidiary, Par Pharmaceutical. For press release and other Company information, visit our website at http://www.parpharm.com