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 and 2-53766 on Form S-8, 333-78253 on Form S-4
      and 333-52055 on Form S-3

With respect to the subject registration statements, we acknowledge our
awareness of the use therein of our report dated October 25, 1999, except for
Note 1, to which the date is November 12, 1999, 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
November 15, 1999