POWER OF ATTORNEY

    Know all by these presents, that as of the date hereof, the undersigned hereby constitutes and appoints each of Danielle Gray,
Joseph B. Amsbary, Jr., Paul R. Ingram and Cherita Thomas, respectively, signing singly, the undersigned's true and lawful attorney-in-fact, with full
power of substitution and resubstitution, to:

(1)    prepare, execute in the undersigned's name and on the undersigned's behalf, and submit to the U.S. Securities and Exchange Commission (the "SEC")
a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain and renew codes and passwords enabling the
undersigned to make electronic filings with the SEC of reports required by Section 16(a) of the Securities Exchange Act of 1934 or any rule or regulation
of the SEC;

(2)    execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or member of the Board of Directors of Walgreens
Boots Alliance, Inc. (the "Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules
and regulations thereunder;

(3)    do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such
Form 3, 4, or 5, complete and execute any amendment or amendments thereto, and file such form with the SEC and any stock exchange or similar authority; and

(4)    take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf
of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may
approve in such attorney-in-fact's discretion.

    The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming
all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this
Power of Attorney and the rights and powers herein granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in
such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.

    This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with
respect to the undersigned's holdings of, and transactions in, securities issued by the Company, unless earlier revoked by the undersigned in a
signed writing delivered to the foregoing attorneys-in-fact.

    IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 25th day of September, 2022.

                                                /s/ Tracey D. Brown

                                                                        Signature

                                                                            Tracey D. Brown

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