Document:

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                                                                    EXHIBIT 10.5

November 3, 2003

Warren K. Trowbridge
2421 S.E. Bahia Way
Stuart, FL   34996-1908

                 Re: Amendment to Executive Employment Agreement

Dear Keith,

This letter agreement serves to further amend the Employment Agreement dated as
of September 1, 2000, by and between you and PolyMedica Corporation (the
"Company"), as amended December 14, 2000; September 24, 2001; October 4, 2001;
January 31, 2002; May 31, 2002; July 15, 2002 and August 29, 2003 (together, the
"Executive Employment Agreement").

1.       Section 3.6 Severance Pay is hereby deleted in its entirety and
         replaced with the following in lieu thereof:

                "3.6 Severance Pay. If at any time during the term of this
         Agreement (including any Extended Employment Period), the Executive's
         employment is terminated by the Company without cause (i.e. other than
         pursuant to Section 3.5 or Section 4 hereof), and subject to the
         Executive's execution and non-revocation of a severance agreement and
         release drafted by and satisfactory to counsel for the Company, the
         Company shall continue to pay Executive at his then current Base Salary
         for the remainder of the Employment Period or for eighteen months,
         whichever is longer (the "Severance Period"). Neither party shall be
         entitled to any compensation or claim for good will or other loss
         suffered by reason of termination of this Agreement. Notwithstanding
         the foregoing, the Company's obligations under this Section 3.6 shall
         cease immediately upon the payment by the Company to the Executive of
         the lump sum payment described in Section 4.2(a)(i) of the Executive
         Retention Agreement dated as of September 1, 2000, as may be amended
         from time to time, by and between the Company and the Executive."

2.       Section 3.7 Benefits During Severance Period is hereby deleted in its
         entirety and replaced with the following in lieu thereof:

                "3.7 Benefits During Severance Period. Except as otherwise
         required by law, the Executive shall not be entitled to any employee
         benefits provided under Section 3.3 after termination of Executive's
         employment whether or not severance pay is being provided, except that
         if severance pay is being provided (i) the Company shall continue in
         full force and effect, at its expense, the life insurance provided for
         in Section 3.3(b) for a period of eighteen (18) months after
         termination of Executive's employment hereunder or until Executive
         becomes employed, whichever first occurs, and (ii) the Company shall
         offer, at its expense, continued health and dental insurance as
         required under the Consolidated

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         Omnibus Budget Reconciliation Act of 1985 ("COBRA") or other law for a
         period of eighteen (18) months after termination of Executive's
         employment hereunder or until Executive becomes employed, whichever
         first occurs. If Executive elects not to maintain health insurance
         pursuant to COBRA or other law, the Company is under no obligation to
         reimburse Executive for his otherwise elected coverage. Executive shall
         be obligated to give the Company prompt notice of his subsequent
         employment and at that time, the Company's obligations pursuant to this
         Section 3.7, if any, shall cease."

If the foregoing is acceptable to you, please indicate your agreement by signing
a copy of this letter agreement and returning it to the undersigned.

                                               Very truly yours,

                                               /s/ Samuel L. Shanaman
                                               ----------------------
                                               Samuel L. Shanaman
                                               Lead Director and
                                               Interim Chief Executive Officer

ACCEPTED AND AGREED TO:

/s/ Warren K. Trowbridge
------------------------
Warren K. Trowbridge

November 3, 2003
-----------------
Date

                                       2<PAGE>

                                                                    EXHIBIT 10.6

November 3, 2003

John K. P. Stone III
Frenchman's Marina
2700 Donald Ross Road
Palm Beach Gardens, FL   33410

                 Re: Amendment to Executive Retention Agreement

Dear Nick,

This letter agreement serves to amend the Executive Retention Agreement dated as
of March 28, 2002, by and between you and PolyMedica Corporation (the
"Company").

1.       Section 2 Term of Agreement. The definition of "Term" is hereby amended
as follows:

                  "'Term' shall mean the period commencing as of the Effective
         Date and continuing in effect through August 31, 2004; provided,
         however, that commencing on September 1, 2004 and each September 1
         thereafter, the Term shall be automatically extended for one additional
         year unless, not later than 90 days prior to the scheduled expiration
         of the Term (or any extension thereof), the Company shall have given
         the Executive written notice that the Term will not be extended."

2.       Section 4.2(a)(i)(2) Compensation is hereby deleted in its entirety and
replaced with the following in lieu thereof:

                  "(2) the amount equal to (A) two multiplied by (B) the sum of
         (x) the Executive's highest annual base salary during the three-year
         period prior to the Change in Control Date and (y) the Executive's
         highest annual bonus during the three-year period prior to the Change
         in Control Date."

If the foregoing is acceptable to you, please indicate your agreement by signing
a copy of this letter agreement and returning it to the undersigned.

                                            Very truly yours,

                                            /s/ Samuel L. Shanaman
                                            ----------------------
                                            Samuel L. Shanaman
                                            Lead Director and Interim Chief
                                            Executive Officer

ACCEPTED AND AGREED TO:

/s/ John K.P. Stone III
-----------------------
John K. P. Stone III

November 3, 2003
-----------------
Date<PAGE>

                                                                    EXHIBIT 10.7

November 3, 2003

John K. P. Stone, III
Frenchman's Marina
2700 Donald Ross Road
Palm Beach Gardens, FL   33410

                 Re: Amendment to Executive Employment Agreement

Dear Nick,

This letter agreement serves to further amend the Executive Employment Agreement
dated as of March 27, 2002, by and between you and PolyMedica Corporation. (the
"Company"), as amended by certain letter agreements dated April 1, 2003 and
August 29, 2003 (together, the "Executive Employment Agreement").

1.       Section 3.8 Severance Pay is hereby deleted in its entirety and
replaced with the following in lieu thereof:

                  "3.8 Severance Pay. If at any time during the term of this
         Agreement (including any Extended Employment Period), the Executive's
         employment is terminated by the Company without cause (i.e. other than
         pursuant to Section 3.7 or Section 4 hereof), and subject to the
         Executive's execution and non-revocation of a severance agreement and
         release drafted by and satisfactory to counsel for the Company, the
         Company shall continue to pay Executive at his then current Base Salary
         for the remainder of the Employment Period or for eighteen months,
         whichever is longer (the "Severance Period"). Neither party shall be
         entitled to any compensation or claim for good will or other loss
         suffered by reason of termination of this Agreement. Notwithstanding
         the foregoing, the Company's obligations under this Section 3.8 shall
         cease immediately upon the payment by the Company to the Executive of
         the lump sum payment described in Section 4.2(a)(i) of the Executive
         Retention Agreement dated as of March 28, 2002, as may be amended from
         time to time, by and between the Company and the Executive."

2.       Section 3.9 Benefits During Severance Period is hereby deleted in its
         entirety and replaced with the following in lieu thereof:

                  "3.9 Benefits During Severance Period. Except as otherwise
         required by law, the Executive shall not be entitled to any employee
         benefits provided under Section 3.5 after termination of Executive's
         employment whether or not severance pay is being provided, except that
         if severance pay is being provided (i) the Company shall continue in
         full force and effect, at its expense, the life insurance provided for
         in Section 3.5(b) for a period of eighteen (18) months after
         termination of Executive's employment hereunder or until Executive
         becomes employed, whichever first occurs, and (ii) the Company shall
         offer, at its

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         expense, continued health and dental insurance as required under the
         Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA") or
         other law for a period of eighteen (18) months after termination of
         Executive's employment hereunder or until Executive becomes employed,
         whichever first occurs. If Executive elects not to maintain health
         insurance pursuant to COBRA or other law, the Company is under no
         obligation to reimburse Executive for his otherwise elected coverage.
         Executive shall be obligated to give the Company prompt notice of his
         subsequent employment and at that time, the Company's obligations
         pursuant to this Section 3.9, if any, shall cease."

3.       Section 9 Notices is hereby amended to include a new address for
         Executive as follows:

                  "Any notice or communication given to Executive shall be in
         writing and personally delivered or mailed by certified mail, return
         receipt requested, postage prepaid to: Frenchman's Marina 2700 Donald
         Ross Road Palm Beach, Florida 33410."

If the foregoing is acceptable to you, please indicate your agreement by signing
a copy of this letter agreement and returning it to the undersigned.

                                               Very truly yours,

                                               /s/ Samuel L. Shanaman
                                               ----------------------
                                               Samuel L. Shanaman
                                               Lead Director and
                                               Interim Chief Executive Officer

ACCEPTED AND AGREED TO:

/s/ John K.P. Stone, III
------------------------
John K. P. Stone, III

November 3, 2003
-----------------
Date

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