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                                  EXHIBIT 23.1
                                    CONSENT

     We hereby consent to:

     - the use in this Registration Statement on Form S-3 of our report dated
       February 4, 2000 relating to the financial statements of Express Scripts,
       Inc., which appears in such Registration Statement;

     - the incorporation by reference in this Registration Statement on Form S-3
       of our report dated February 4, 2000 relating to the financial statements
       and financial statement schedule, which appears in Express Scripts,
       Inc.'s Annual Report on Form 10-K for the year ended December 31, 1999;
       and

     - the references to us under the headings "Selected Financial and Operating
       Data" and "Experts" in such Registration Statement.

PricewaterhouseCoopers LLP
St. Louis, Missouri
October 4, 2000