PART II                                                             EXHIBIT 15.1
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               LETTER RE: UNAUDITED INTERIM FINANCIAL INFORMATION

CVS Corporation
Woonsocket, Rhode Island

Board of Directors:

Re:      Registration Statements Numbers 333-49407, 33-40251, 333-34927,
         333-28043, 33-17181, 2-97913, 2-77397, 2-53766 and 333-91253 on Form
         S-8, 333-52055 on Form S-3 and 333-78253 on Form S-4.

With respect to the subject registration statements, we acknowledge our
awareness of the use therein of our report dated April 30, 2001, related to our
review of interim financial information.

Pursuant to Rule 436(c) under the Securities Act of 1933, such report is not
considered a part of a registration statement prepared or certified by an
accountant or a report prepared or certified by an accountant within the meaning
of sections 7 and 11 of the Act.

Very truly yours,


/s/ KPMG LLP
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KPMG LLP

Providence, Rhode Island
May 10, 2001