CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 333-65570, 333-51984, 333-40590, 333-81883, 333-71809, 333-69395, 333-44217, 333-35569 and 333-105896) and Form S-8 (Nos. 333-57304, 333-37968, 333-79265, 333-58345 and 333-41595) of Impax Laboratories, Inc. of our report dated March 24, 2003, relating to the financial statements, which appears in this Form 10-K. PricewaterhouseCoopers LLP Philadelphia, PA March 10, 2004