POWER OF ATTORNEY

        The undersigned hereby constitutes and appoints Benjamin Harshbarger,
Jennifer Fitzpatrick and David Fine, with full power of substitution, as 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, or any
                rule or regulation of the SEC;

        (2)     execute for and on behalf of the undersigned, in the
                undersigned's capacity as officer and/or director of Aegerion
                Pharmaceuticals, Inc. (the "Company"), Forms 3, 4, and 5 in
                accordance with Section 16(a) of the Securities Exchange Act of
                1934, as amended, and the rules thereunder;

        (3)     do and perform any and all acts for and on behalf of the
                undersigned that 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 that, 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 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 attorney-in-fact, in
serving in such capacity at the request of the undersigned, is 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, as amended.

        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 attorney-in-fact.

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        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of January 6, 2016.

                                        /s/ Mary T. Szela
                                        ---------------------------------------
                                        Mary T. Szela