Spring Valley, New York, May 30, 2003 — Pharmaceutical Resources, Inc. (NYSE:PRX), will make a presentation on Wednesday, June 4, 2003 at 8:30 a.m. ET at the UBS Warburg Global Specialty Pharmaceuticals Conference. The conference will be held at The Grand Hyatt Hotel in New York City.

You can link to the conference directly through the UBS Warburg website at: http://event.streamx.us/event/Default.asp?Event=UBS20030604 and follow the path to WEBCAST or through the Par Pharmaceutical website. A replay will be available at the same link address for up to 60 days after the conference.

Pharmaceutical Resources, Inc., a holding company, develops, manufactures, and distributes generic pharmaceuticals through its wholly owned subsidiary, Par Pharmaceutical. Through its FineTech unit, PRX also develops and utilizes synthetic chemical processes to design and develop intermediate ingredients used in the production of finished products for the pharmaceutical industry. PRX currently manufactures and distributes over 167 products representing various dosage strengths of 62 drugs. For press release and other Company information, visit http://www.parpharm.com.