8-K
MEDICINES CO /DE filed this form 8-K on 27 Sep 2001
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549

                                  ------------

                                    FORM 8-K


                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


Date of Report (Date of earliest event reported):  September 25, 2001

                              The Medicines Company
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               (Exact Name of Registrant as Specified in Charter)


          Delaware                    000-31191                 04-3324394
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(State or Other Jurisdiction         (Commission             (I.R.S. Employer
     of Incorporation)               File Number)           Identification No.)


            One Cambridge Center
               Cambridge, MA                                      02142
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 (Address of Principal Executive Offices)                       (Zip Code)

Registrant's telephone number, including area code: (617) 225-9099


                                 Not Applicable
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          (Former Name or Former Address, if Changed Since Last Report)