WALGREEN CO. Floating Rate Note due March 13, 2014

Exhibit 4.1

THIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY (AS DEFINED IN THE INDENTURE) OR A NOMINEE THEREOF. THIS GLOBAL SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR ITS NOMINEE ONLY IN LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE FORM, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY, OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY, OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE COMPANY (AS DEFINED BELOW) OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

WALGREEN CO.

Floating Rate Note due March 13, 2014

Walgreen Co., an Illinois corporation (hereinafter called the “Company”, which term includes any successor Person under the Indenture referred to below), for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of             on March 13, 2014 and to pay interest thereon from September 13, 2012 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, quarterly on March 13, June 13, September 13 and December 13 in each year (each an “Interest Payment Date”), commencing December 13, 2012 at the rate, reset quarterly, equal to three-month U.S. dollar LIBOR plus 0.500% (as determined by Wells Fargo Bank, National Association, as Calculation Agent (as defined below)), until the principal hereof is paid or duly made available for payment. The interest so payable and punctually paid or duly provided for on any Interest Payment Date shall, as provided in such Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which shall be the March 1, June 1, September 1 or December 1, as the case may be, subject to the Business Day Convention (as defined below), next preceding such Interest Payment Date. Interest on the Notes will be calculated on the basis of the actual number of calendar

days in the calculation period divided by 360. Any such interest which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the Holder hereof on the relevant Regular Record Date by virtue of having been such Holder, and may be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Company, notice whereof shall be given to Holders of Notes of this series not less than 10 days prior to such Special Record Date, or may be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Notes may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture.

The Calculation Agent will determine the three-month U.S. dollar LIBOR in accordance with the following provisions: with respect to any Interest Determination Date (as defined below), the three-month U.S. dollar LIBOR will be the rate (expressed as a percentage per annum) for deposits in U.S. dollars having a maturity of three months that appears on the designated LIBOR page (as described below) as of 11:00 a.m., London time, on such Interest Determination Date. If the three-month U.S. dollar LIBOR does not appear on the designated LIBOR page, the three-month U.S. dollar LIBOR, in respect of such Interest Determination Date , will be determined as follows: the Calculation Agent will request the principal London offices of each of four major reference banks in the London interbank market, as selected by the Calculation Agent (after consultation with the Company), to provide the Calculation Agent with its offered quotation for deposits in U.S. dollars for the period of three months commencing on the applicable Interest Reset Date (as defined below), to prime banks in the London interbank market at approximately 11:00 a.m., London time, on that Interest Determination Date and in a principal amount of not less than $1,000,000 for a single transaction in U.S. dollars in such market at such time. If at least two quotations are provided, then the three-month U.S. dollar LIBOR on such Interest Determination Date will be the arithmetic mean of such quotations. If fewer than two such quotations are provided, then the three-month U.S. dollar LIBOR on such Interest Determination Date will be the arithmetic mean of the rates quoted at approximately 11:00 a.m., New York City time, on such Interest Determination Date by three major reference banks in New York City selected by the Calculation Agent (after consultation with us) for loans in U.S. dollars to leading European banks, having a three-month maturity and in a principal amount of not less than $1,000,000 for a single transaction in U.S. dollars in such market at such time; provided, however, that if the banks selected by the Calculation Agent are not providing quotations in the manner described by this sentence, the three-month U.S. dollar LIBOR determined as of such Interest Determination Date will be the three-month U.S. dollar LIBOR in effect prior to such Interest Determination Date.

The designated LIBOR page shall be: (1) the Reuters screen “LIBOR01” or such other page as may replace the Reuters screen “LIBOR01” on that service or (2) if, on any Interest Determination Date, the three-month U.S. dollar LIBOR does not appear or is not available on such date on the designated Reuters screen described in clause (1) above, the designated LIBOR page shall be Bloomberg L.P. page “BBAM” or such other page as may replace Bloomberg L.P. page “BBAM” on that service.

All percentages resulting from any calculation of any interest rate for the Notes will be rounded, if necessary, to the nearest one hundred thousandth of a percentage point, with five one-

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millionths of a percentage point rounded upward (e.g., 3.876545% (or .03876545) would be rounded to 3.87655% (or .0387655)), and all U.S. dollar amounts will be rounded to the nearest cent, with one-half cent being rounded upward. Each calculation of the interest rate on the Notes by the Calculation Agent will (in the absence of manifest error) be final and binding on the Holders of the Notes and the Company.

“Business Day” means any day that is not a Saturday, Sunday, or a day on which commercial banking institutions in New York City or in the city where the Corporate Trust Office (as defined below) is located are authorized or obligated by law, regulation or executive order to be closed.

“Business Day Convention” means if any Interest Payment Date in respect of any Note (other than the Maturity date) is not a Business Day, then such Interest Payment Date will be postponed to the next succeeding Business Day unless that Business Day is in the next succeeding calendar month, in which case the Interest Payment Date will be the immediately preceding Business Day. If any such Interest Payment Date (other than the Maturity date) is postponed or brought forward as described above, the interest amount will be adjusted accordingly and the holder will be entitled to more or less interest, respectively. If the Stated Maturity in respect of the Notes is not a Business Day, the payment of principal and interest at the Stated Maturity will not be made until the next following Business Day and no further interest will be paid in respect of the delay in such payment.

“Calculation Agent” means Wells Fargo Bank, National Association, in its capacity as calculation agent for the Notes under a Calculation Agency Agreement between the Company and Wells Fargo Bank, National Association to be dated as of September 13, 2012.

“Corporate Trust Office” means the principal office of the Trustee from which at any particular time, the Trustee administers the Indenture, which office is presently located at 230 Monroe Street, Suite 2900, Chicago, Illinois 60606, except that with respect to the presentation of Securities for payment or for registration of transfer or exchange and the location of the Securities Registrar such term means the office or agency of the Trustee at which at any particular time its corporate agency business shall be conducted.

“Interest Determination Date” means, for each Interest Reset Date, the second London Business Day (as defined below) preceding such Interest Reset Date.

“Interest Period” means for the Notes the period beginning on, and including, an Interest Payment Date and ending on, but not including, the following Interest Payment Date; provided that the first Interest Period will begin on September 13, 2012, and will end on, but not include, the first Interest Payment Date.

“Interest Reset Date” means for each Interest Period, other than the first Interest Period, the first day of such Interest Period.

“London Business Day” means any day that is not a Saturday, Sunday, or a day on which commercial banking institutions are authorized or obligated by law, regulation or executive order to be closed in London.

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Each Note will cease to bear interest upon Maturity unless, upon due presentation, payment of the amount due is improperly withheld or refused, in which case it will continue to bear interest (before as well as after judgment) until the day on which all sums due in respect of such Note up to that day are received by or on behalf of the relevant holder of such Note.

Payment of the principal of and the interest on this Note shall be made at the designated office of the Trustee (as defined below) at Wells Fargo Bank, National Association, Corporate Trust Operations, 608 Second Avenue South, N9303-121, Minneapolis, Minnesota 55479, Attn: Corporate Trust Operations, in such currency of the United States of America as at the time of payment is legal tender for payment of public and private debts; provided, however, that at the option of the Company, interest may be paid by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register, provided, further, that payment to DTC or any successor depositary may be made by wire transfer to the account maintained with a bank in the United States designated by DTC or such successor depositary in writing.

This Note is one of a duly authorized issue of securities of the Company (herein called the “Notes”), issued and to be issued in one or more series under an Indenture, dated as of July 17, 2008 (herein called, together with all indentures supplemental thereto, the “Indenture”) between the Company and Wells Fargo Bank, National Association, as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture, all indentures supplemental thereto and the Officers’ Certificate dated September 13, 2012 (the “Officers’ Certificate”) reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Notes and of the terms upon which the Notes are, and are to be, authenticated and delivered. This Note is one of the series designated on the face hereof, limited (subject to exceptions provided in the Indenture) to the aggregate principal amount specified in the Officers’ Certificate establishing the terms of the Notes pursuant to the Indenture.

If a Change of Control Triggering Event (as defined below) occurs with respect to the Notes, the Company shall make an offer (a “Change of Control Offer”) to each Holder of the Notes to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess thereof) of that Holder’s Notes on the terms set forth herein. In a Change of Control Offer, the Company shall offer payment in cash equal to 101% of the aggregate principal amount of Notes repurchased, plus accrued and unpaid interest, if any, on the Notes repurchased to the date of repurchase (a “Change of Control Payment”).

Within 30 days following any Change of Control Triggering Event or, at the Company’s option, prior to any Change of Control (as defined below), but after public announcement of the transaction that constitutes or may constitute the Change of Control, a notice shall be mailed to each Holder and the Trustee, describing the transaction that constitutes or may constitute the Change of Control Triggering Event and offering to repurchase the Notes on the date specified in the applicable notice, which date shall be no earlier than 30 days and no later than 60 days from the date such notice is mailed (a “Change of Control Payment Date”). The notice shall, if mailed prior to the date of consummation of the Change of Control, state that the Change of Control Offer is conditioned on the Change of Control Triggering Event occurring on or prior to the applicable Change of Control Payment Date.

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On each Change of Control Payment Date, the Company shall, to the extent lawful:

The Company shall not be required to make a Change of Control Offer upon the occurrence of a Change of Control Triggering Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and such third party purchases all Notes properly tendered and not withdrawn under its offer. In addition, the Company shall not repurchase any Notes if there has occurred and is continuing on the Change of Control Payment Date an Event of Default under the Indenture, other than a default in the payment of the Change of Control Payment upon a Change of Control Triggering Event.

The Company shall comply with the requirements of Rule 14e-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and any other securities laws and regulations thereunder, to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Offer provisions of the Notes, the Company shall comply with those securities laws and regulations and shall not be deemed to have breached its obligations under the Change of Control Offer provisions of the Notes by virtue of any such conflict and compliance.

For purposes of the Change of Control Offer provisions of the Notes, the following defined terms shall have the meanings specified:

“Change of Control” means the occurrence of any of the following: (1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or more series of related transactions, of all or substantially all of the Company’s assets and the assets of the Company’s subsidiaries, taken as a whole, to any person, other than the Company or one of its subsidiaries; (2) the consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is that any person becomes the beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of the Company’s outstanding Voting Stock (as defined below) or other Voting Stock into which the Company’s Voting Stock is reclassified, consolidated, exchanged or changed, measured by voting power rather than number of shares; (3) the Company consolidates with, or merges with or into, any person, or any person consolidates with, or merges with or into, the Company, in any such event pursuant to a transaction in which any of the Company’s outstanding Voting Stock or the Voting Stock of such other person is converted into or

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exchanged for cash, securities or other property, other than any such transaction where the shares of the Company’s Voting Stock outstanding immediately prior to such transaction constitute, or are converted into or exchanged for, a majority of the Voting Stock of the surviving person or any direct or indirect parent company of the surviving person immediately after giving effect to such transaction, measured by voting power rather than number of shares; (4) the first day on which a majority of the members of the Company’s Board of Directors are not Continuing Directors (as defined below); or (5) the adoption of a plan relating to the Company’s liquidation or dissolution. Notwithstanding the foregoing, a transaction shall not be deemed to involve a Change of Control under clause (2) above if (i) the Company becomes a direct or indirect wholly owned subsidiary of a holding company and (ii)(A) the direct or indirect holders of the Voting Stock of such holding company immediately following that transaction are substantially the same as the holders of the Company’s Voting Stock immediately prior to that transaction or (B) immediately following that transaction no person (other than a holding company satisfying the requirements of this sentence) is the beneficial owner, directly or indirectly, of more than 50% of the Voting Stock of such holding company. The term “person,” as used in this definition, has the meaning given thereto in Section 13(d)(3) of the Exchange Act.

“Change of Control Triggering Event” means the occurrence of both a Change of Control and a Rating Event (as defined below).

“Continuing Directors” means, as of any date of determination, any member of the Company’s Board of Directors who (1) was a member of such Board of Directors on the date the Notes were issued; or (2) was nominated for election, elected or appointed to such Board of Directors with the approval of a majority of the Continuing Directors who were members of such Board of Directors at the time of such nomination, election or appointment (either by a specific vote or by approval of the Company’s proxy statement in which such member was named as a nominee for election as a director, without objection to such nomination).

“Investment Grade Rating” means a rating equal to or higher than Baa3 (or the equivalent) by Moody’s (as defined below) and BBB- (or the equivalent) by S&P (as defined below), and the equivalent investment grade credit rating from any replacement Rating Agency or Rating Agencies (as defined below) selected by the Company.

“Moody’s” means Moody’s Investors Service, Inc. and its successors.

“Rating Agencies” means (1) each of Moody’s and S&P; and (2) if either of Moody’s or S&P ceases to rate the Notes or fails to make a rating of the Notes publicly available for reasons outside of the Company’s control, a “nationally recognized statistical rating organization” within the meaning of Rule 15c3-1(c)(2)(vi)(F) under the Exchange Act, selected by the Company (as certified by a resolution of the Company’s Board of Directors) as a replacement agency for Moody’s or S&P, or both of them, as the case may be.

“Rating Event” means the rating on the Notes is lowered by both Rating Agencies and the Notes are rated below an Investment Grade Rating by both Rating Agencies, in any case on any day during the period (which period shall be extended so long as the rating of the Notes is under publicly announced consideration for a possible downgrade by any of the Rating Agencies) commencing upon the first public notice of the occurrence of a Change of Control or our intention to effect a Change of Control and ending 60 days following the consummation of such Change of Control.

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“S&P” means Standard & Poor’s Rating Services, a division of The McGraw-Hill Companies, Inc., and its successors.

“Voting Stock” means, with respect to any specified “person” (as such term is used in Section 13(d)(3) of the Exchange Act) as of any date, the capital stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.

The Notes are not subject to any sinking fund.

The Indenture contains provisions for defeasance at any time of the entire indebtedness of this Note or certain restrictive covenants and Events of Default with respect to this Note, in each case upon compliance with certain conditions set forth in the Indenture.

If an Event of Default with respect to Notes of this series shall occur and be continuing, the then-outstanding principal of the Notes of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of not less than a majority in aggregate principal amount of the Securities at the time Outstanding of each series affected thereby. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate principal amount of the Securities of any series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Note shall be conclusive and binding upon such Holder and upon all future Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Note.

No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the right of the Holder of this Note, which is absolute and unconditional, to receive payment of the principal of and, subject to certain qualifications in the Indenture, interest on this Note at the times herein and in the Indenture prescribed and to institute suit for the enforcement of any such payment unless the Holder of this Note shall have consented to the impairment of such right.

As provided in the Indenture and subject to certain limitations set forth therein, the transfer of this Note may be registered in the Security Register, upon surrender of this Note for registration of transfer at the Office or Agency of the Company in any place where the principal of and any premium and interest on this Note are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or by his attorney duly authorized in writing, and thereupon one or more new Notes of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, shall be issued to the designated transferee or transferees.

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The Notes are issuable only in registered form without coupons in denominations of $2,000 and integral multiples of $1,000 in excess thereof. Subject to certain limitations therein set forth in the Indenture and in this Note, the Notes are exchangeable for a like aggregate principal amount of Notes of this series in different authorized denominations, as requested by the Holders surrendering the same.

No service charge by the Company shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge and any other expenses payable in connection therewith, other than in certain cases provided in the Indenture.

Prior to due presentment of this Note for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

The Indenture contains provisions whereby (i) the Company may be discharged from its obligations with respect to the Notes (subject to certain exceptions) or (ii) the Company may be released from its obligations under specified covenants and agreements in the Indenture, in each case if the Company irrevocably deposits with the Trustee money or U.S. Government Obligations sufficient to pay and discharge the entire indebtedness on all Notes of this series, and satisfies certain other conditions, all as more fully provided in the Indenture.

This Note shall be governed by and construed in accordance with the laws of the State of New York.

All terms used in this Note which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

Unless the certificate of authentication hereon has been executed by or on behalf of the Trustee under the Indenture by the manual signature of one of its authorized signatories, this Note shall not be entitled to any benefits under the Indenture or be valid or obligatory for any purpose.

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IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: September     , 2012

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture.

Dated: September     , 2012

ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out in full according to applicable laws or regulations.

Additional abbreviations may also be used though not in the above list.

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please insert Assignee’s legal name)

(Please insert Social Security or other identifying number of Assignee)

(Please print or typewrite name and address including postal zip code of Assignee)

the within Note of WALGREEN CO. and does hereby irrevocably constitute and appoint                                                                    attorney to transfer the said Note on the books of the Company, with full power of substitution in the premises.

Dated:                    

[NOTICE: The signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatever.]

SCHEDULE OF INCREASES OR DECREASES IN GLOBAL

SECURITY

The following increases or decreases in this global Security have been made: