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                                                                    Exhibit 4.3

                               ABBOTT LABORATORIES

                       ACTIONS OF THE AUTHORIZED OFFICERS

         Pursuant to the authority granted by the Board of Directors of Abbott
Laboratories ("Corporation") in its February 9, 2001 resolutions, the
undersigned agree as follows:

         1. The Corporation shall issue $1,650,000,000 aggregate principal
amount of the Corporation's 5.125% Notes due July 1, 2004 ("Notes due 2004"),
and $1,600,000,000 aggregate principal amount of the Corporation's 5.625% Notes
due July 1, 2006 ("Notes due 2006," and, together with the Notes due 2004, the
"Notes").

         2. The Corporation shall issue and sell the Notes due 2004 and
the Notes due 2006 to Banc of America Securities LLC, Goldman, Sachs & Co.,
Salomon Smith Barney Inc., Banc One Capital Markets, Inc., Morgan Stanley & Co.
Incorporated, ABN AMRO Incorporated, BMO Nesbitt Burns Corp., First Union
Securities, Inc., ING Barings LLC, SG Cowen Securities Corporation, Wachovia
Securities, Inc., and The Williams Capital Group, L.P. (collectively,
"Underwriters") pursuant to an Underwriting Agreement dated June 28, 2001, and a
Pricing Agreement dated June 28, 2001 ("Pricing Agreement"), between the
Corporation and the Underwriters, upon the terms and conditions set forth
therein, to be issued under and in accordance with an Indenture, dated as of
February 9, 2001, between the Corporation and the Bank One Trust Company, N.A.,
as Trustee ("Trustee"), relating to the Notes due 2004 and the Notes due 2006
and other obligations ("Indenture").

         3. In addition to the other terms provided in the Indenture with
respect to securities issued thereunder, all as more particularly described in
the Pricing Agreement, the Prospectus and the Prospectus Supplement relating to
the Notes and the forms of Notes referred to below, the Notes shall contain the
following terms:

         (a) The Notes due 2004 shall be entitled "5.125% Notes due July 1,
         2004", and the Notes due 2006 shall be entitled "5.625% Notes due July
         1, 2006";

         (b) The Notes due 2004 shall be limited in aggregate principal amount
         to $1,650,000,000 and the Notes due 2006 shall be limited in aggregate
         principal amount to $1,600,000,000, subject to any increase in the
         aggregate principal amount of the Notes due 2004 and the Notes due 2006
         which the Corporation may in its discretion effectuate in the future.

         (c) Interest shall be payable to the persons in whose names the Notes
         due 2004 and the Notes due 2006 are registered at the close of business
         on the applicable Regular Record Date (as defined below);

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         (d) The principal of the Notes due 2004 is payable on July 1, 2004,
         and the principal of the Notes due 2006 is payable on July 1, 2006;

         (e) The Notes due 2004 shall bear interest at the rate of 5.125% per
         annum beginning July 5, 2001. The Notes due 2006 shall bear interest at
         the rate of 5.625% per annum beginning July 5, 2001. Interest on the
         Notes due 2004 and the Notes due 2006 will be payable semi-annually on
         the first day of January and July of each year (each an "Interest
         Payment Date"), commencing on January 1, 2002. Interest shall be paid
         to persons in whose names the Notes due 2004 and the Notes due 2006 are
         registered on the December 15 or June 15 preceding the Interest Payment
         Date (each a "Regular Record Date");

         (f) Payment of the principal of, and any premium and interest on, the
         Notes due 2004 and the Notes due 2006 will be made at the office or
         agency of the Corporation maintained for that purpose in Chicago,
         Illinois;

         (g) The Notes due 2004 and the Notes due 2006 may be redeemed at any
         time at Abbott's option, in whole or from time to time in part, at a
         redemption price equal to the sum of (1) the principal amount of the
         Notes due 2004 and the Notes due 2006 being redeemed plus accrued
         interest to the redemption date and (2) the Make-Whole Amount, as such
         term is defined in the Prospectus Supplement, if any;

         (h) The Notes due 2004 and the Notes due 2006 shall not provide for
         any sinking fund;

         (i) The Notes due 2004 and the Notes due 2006 are issuable only in
         registered form without coupons in denominations of $1,000 and any
         integral multiple thereof;

         (j) The payment of the principal of, and any premium and interest on,
         the Notes due 2004 and the Notes due 2006 shall be made in such coin or
         currency of the United States of America as at the time of payment is
         legal tender for payment of public and private debts;

         (k) The payment of principal of, and any premium and interest on, the
         Notes due 2004 and the Notes due 2006 shall not be determined with
         reference to an index or formula;

         (l) There shall be no optional currency or currency unit in which the
         payment of principal of, and any premium and interest on, the Notes due
         2004 and the Notes due 2006 shall be payable;

         (m) Both Section 13.2 and 13.3 of the Indenture shall apply to the
         Notes due 2004 and the Notes due 2006;

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         (n) The Notes due 2004 and the Notes due 2006 shall be in the form
         of Book-Entry Securities as set forth in the Indenture;

         (o) The principal amount of the Notes due 2004 and the Notes due 2006
         shall be payable upon declaration of acceleration pursuant to Section
         5.2 of the Indenture; and

         (p) The other terms and conditions of the Notes due 2004 and the Notes
         due 2006 shall be substantially as set forth in the Indenture and in
         the Prospectus and the Prospectus Supplement relating to the Notes due
         2004 and the Notes due 2006.

         4. The forms of the Notes due 2004 and the Notes due 2006 shall be
substantially as attached hereto as EXHIBIT A.

         5. The price at which the Notes due 2004 shall be sold by the
Corporation to the Underwriters pursuant to the Pricing Agreement shall be
99.381% of the principal amount thereof, plus accrued interest, if any, from
July 5, 2001 to the time of delivery of the Notes due 2004.

         6. The price at which the Notes due 2006 shall be sold by the
Corporation to the Underwriters pursuant to the Pricing Agreement shall be
99.071% of the principal amount thereof, plus accrued interest, if any, from
July 5, 2001 to the time of delivery of the Notes due 2006.

         7. The Notes due 2004 initially will be offered to the public by the
Underwriters at 99.831% of the principal amount thereof, plus accrued interest,
if any, from July 5, 2001 to the time of delivery of the Notes due 2004.

         8. The Notes due 2006 initially will be offered to the public by the
Underwriters at 99.671% of the principal amount thereof, plus accrued interest,
if any, from July 5, 2001 to the time of delivery of the Notes due 2006.

         9. The execution and delivery of the Pricing Agreement, dated June 28,
2001, and substantially in the form attached hereto as EXHIBIT B, is hereby
approved.

         10. Any officer of this Corporation is hereby authorized and empowered
to execute the Notes due 2004 and the Notes due 2006 of this Corporation in the
forms he or she deems appropriate, and to deliver such Notes to the Trustee with
a written order directing the Trustee to have the Notes authenticated and
delivered to such persons as such officer designates.

         11. Bank One Trust Company, N.A. is hereby designated and appointed
as Paying Agent and Securities Registrar with respect to the Notes due 2004 and
the Notes due 2006.

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Dated:   June 28, 2001

                                      AUTHORIZED OFFICERS OF
                                      ABBOTT LABORATORIES

                                      By   /s/ Greg W. Linder
                                        ---------------------------------------
                                           Name:  Greg W. Linder
                                           Title: Vice President and
                                                  Treasurer

                                      By   /s/ T.C. Freyman
                                        ---------------------------------------
                                           Name:  T.C. Freyman
                                           Title: Senior Vice President,
                                                  Finance and Chief
                                                  Financial Officer

                                       -4-<Page>

                                                                    Exhibit 4.4

                               ABBOTT LABORATORIES

                              OFFICERS' CERTIFICATE

                                       AND

                                  COMPANY ORDER

         With respect to the issuance by Abbott Laboratories (the "Company") of
$1,650,000,000 in aggregate principal amount of 5.125% Notes due July 1, 2004
(the "Notes due 2004") and of $1,600,000,000 in aggregate principal amount of
5.625% Notes due July 1, 2006 (the "Notes due 2006" and, together with the Notes
due 2004, the "Notes"), Jose M. de Lasa and Greg W. Linder, officers of the
Company, certify pursuant to Sections 3.1 and 3.3 of the Indenture, dated as of
February 9, 2001 (the "Indenture"), between the Company and Bank One Trust
Company, N.A., as Trustee (the "Trustee"), as follows:

         1.       We have read Sections 2.1, 3.1 and 3.3 of the Indenture and
                  the definitions therein relating hereto, reviewed the
                  resolutions of the Board of Directors of the Company adopted
                  on February 9, 2001 (attached as Exhibit B to the Secretary's
                  Certificate of even date herewith), the Actions of the
                  Authorized Officers of June 28, 2001 (attached as Exhibit C to
                  the Secretary's Certificate of even date herewith), conferred
                  with executive officers of the Company and, in our opinion,
                  made such other examinations and investigations as are
                  necessary to enable us to express an informed opinion as to
                  whether Sections 2.1, 3.1 and 3.3 of the Indenture have been
                  complied with.

         2.       Based on the above-described examinations and investigations,
                  in our opinion, all conditions precedent relating to the
                  authentication and delivery of the Notes due 2004 and Notes
                  due 2006, including those conditions under Sections 2.1, 3.1
                  and 3.3 of the Indenture, have been complied with.

         3.       The terms of the Notes due 2004 and Notes due 2006 are set
                  forth in the Actions of the Authorized Officers, dated June
                  28, 2001 (attached as Exhibit C to the Secretary's Certificate
                  of even date herewith).

         4.       In accordance with the provisions of Section 3.3 of the
                  Indenture, the Trustee is hereby authorized and requested to
                  authenticate the Notes due 2004 and the Notes due 2006 and to
                  deliver such Notes to or at the direction of Banc of America
                  Securities LLC, Goldman, Sachs & Co., and Salomon Smith Barney
                  Inc. as representatives of the several underwriters.

         Capitalized terms used herein and not otherwise defined herein shall
have the respective meanings assigned thereto in the Indenture.

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         IN WITNESS WHEREOF, the undersigned have executed this Officers'
Certificate as of this 5th day of July, 2001.

                              ABBOTT LABORATORIES

                              By: /s/ Jose M. de Lasa
                                 ----------------------------------------------
                                  Name:  Jose M. de Lasa,
                                  Title: Senior Vice President, Secretary and
                                         General Counsel

                              By: /s/ Greg W. Linder
                                 ----------------------------------------------
                                  Name:  Greg W. Linder,
                                  Title: Vice President and Treasurer

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