<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>c71278exv99w1.txt
<DESCRIPTION>CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
<TEXT>
<PAGE>
                                                                    EXHIBIT 99.1



           CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED
            PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the Quarterly Report of Sheffield Pharmaceuticals, Inc. (the
Company") on Form 10-Q for the period ending June 30, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), the
undersigned Chief Executive Officer and Chief Financial Officer of the Company
hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that based on their knowledge: 1)
the Report fully complies with the requirements of Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, and 2) the information contained in the Report
fairly presents, in all material respects, the financial condition and results
of operations of the Company as of and for the periods covered in the Report.




/s/ Thomas M. Fitzgerald
---------------------------------------------
Thomas M. Fitzgerald, Chief Executive Officer



/s/ Scott A. Hoffmann
---------------------------------------------
Scott A. Hoffmann, Chief Financial Officer


August 14, 2002

</TEXT>
</DOCUMENT>
