EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in the Post-Effective Amendment to Registration Statement No. 33-13901, and in Registration Statement Nos. 33-73696, 33-73698, 33-73700, 333-17349, 333-17351, 333-50356, 333-75388, 333-75390, 333-102070, and 333-102072 of Barr Laboratories, Inc. on Form S-8 of our report dated August 6, 2003, appearing in this Annual Report on Form 10-K of Barr Laboratories, Inc. for the year ended June 30, 2003. /s/ DELOITTE & TOUCHE LLP Stamford, Connecticut August 26, 2003