Exhibit 31.2

                                  CERTIFICATION

I, Jeffrey R. Black, certify that:

        1. I have reviewed this annual report on Form 10-K of Endo
    Pharmaceuticals Holdings Inc.;

        2. Based on my knowledge, this annual report does not contain any untrue
    statement of a material fact or omit to state a material fact necessary to
    make the statements made, in light of the circumstances under which such
    statements were made, not misleading with respect to the period covered by
    this annual report;

        3. Based on my knowledge, the financial statements, and other financial
    information included in this annual report, fairly present in all material
    respects the financial condition, results of operations and cash flows of
    the registrant as of, and for, the periods presented in this annual report;

        4. The registrant's other certifying officers and I are responsible for
    establishing and maintaining disclosure controls and procedures (as defined
    in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

        a) Designed such disclosure controls and procedures to ensure that
    material information relating to the registrant, including its consolidated
    subsidiaries, is made known to us by others within those entities,
    particularly during the period in which this annual report is being
    prepared;

        b) Evaluated the effectiveness of the registrant's disclosure controls
    and procedures as of a date within 90 days prior to the filing date of this
    annual report (the "Evaluation Date"); and

        c) Presented in this annual report our conclusions about the
    effectiveness of the disclosure controls and procedures based on our
    evaluation as of the Evaluation Date;

        5. The registrant's other certifying officers and I have disclosed,
    based on our most recent evaluation, to the registrant's auditors and the
    audit committee of registrant's board of directors (or persons performing
    the equivalent functions):

        a) All significant deficiencies in the design or operation of internal
    controls which could adversely affect the registrant's ability to record,
    process, summarize and report financial data and have identified for the
    registrant's auditors any material weaknesses in internal controls; and

        b) Any fraud, whether or not material, that involves management or other
    employees who have a significant role in the registrant's internal controls;
    and

        6. The registrant's other certifying officers and I have indicated in
    this annual report whether there were significant changes in internal
    controls or in other factors that could significantly affect internal
    controls subsequent to the date of our most recent evaluation, including any
    corrective actions with regard to significant deficiencies and material
    weaknesses.

                              /s/ Jeffrey R. Black

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                                Jeffrey R. Black
           Senior Vice President, Chief Financial Officer & Treasurer

Date: March 15, 2004