Exhibit 24

                               POWER OF ATTORNEY

        The undersigned hereby appoints each of Brian S. Roman, Thomas D. Salus
and Kevin D. Macikowski, or any of them signing singly, and with full power of
substitution, the undersigned's true and lawful attorney-in-fact 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 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, as amended (the
               "Exchange Act"), 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 director of Mylan
               N.V. (the "Company"), Forms 3, 4, and 5 in accordance with
               Section 16(a) of the Exchange Act and the rules thereunder and
               any other forms or reports the undersigned may be required to
               file in connection with the undersigned's ownership, acquisition,
               or disposition of securities of the Company;

        (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 timely 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 Exchange Act and
the rules thereunder.

        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 2nd day of March, 2018.

                                        /s/ Daniel Martin Gallagher, Jr.
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                                                  Signature

                                        Daniel Martin Gallagher, Jr.
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