IMPAX Laboratories to Hold Second Quarter 2003 Financial Results Conference Call Monday, July 28, 2003

July 22, 2003

HAYWARD, Calif. (July 22, 2003) – IMPAX Laboratories Inc. (Nasdaq NM: IPXL) today announced that the Company will release 2003 second quarter financial results on Monday, July 28, 2003.

Barry R. Edwards, Co-Chief Executive Officer, and Cornel C. Spiegler, Chief Financial Officer, will host an investment conference call beginning at 8:30 a.m. Eastern Time (5:30 a.m. Pacific Time) on July 28, 2003 to discuss these results and to answer questions.

To participate in the live call by telephone, please dial (888) 803-7396 from the U.S., or for international callers, please dial (706) 634-1052.

Those interested in listening to the conference call live via the Internet may do so by visiting the Company's web site at To listen to the live call, please go to the Web site 15 minutes prior to its start to register, download, and install the necessary audio software.

A replay will be available on the Company web site for 14 days beginning July 28, 2003. A telephone replay will be available from 9:30 a.m. Eastern Time July 28, 2003 through 11:59 p.m. Eastern Time July 30, 2003 by dialing (800) 642-1687 from the U.S., or (706) 645-9291 for international callers, and entering reservation 1824737.

IMPAX Laboratories, Inc. is a technology based specialty pharmaceutical company applying its formulation expertise and drug delivery technology to the development of controlled-release and specialty generics in addition to the development of branded products. IMPAX markets its generic products through its Global Pharmaceuticals division and intends to market its branded products through the IMPAX Pharmaceuticals division. Additionally, where strategically appropriate, IMPAX has developed marketing partnerships to fully leverage its technology platform. IMPAX Laboratories is headquartered in Hayward, California, and has a full range of capabilities in its Hayward and Philadelphia facilities. For more information, please visit the Company's Web site at: