POWER OF ATTORNEY

    The undersigned, as a Section 16 reporting person of Capnia, Inc. (the
"Company"), hereby constitutes and appoints Anish Bhatnagar and David D. O'Toole
and each of them, 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 Securities and Exchange Commission (the "SEC") a Form
ID, including amendments thereto, and any other documents necessary or
appropriate to obtain EDGAR 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.  Complete and execute Forms 3, 4 and 5 and other forms and all amendments
thereto as such attorney-in-fact shall in his or her discretion determine to be
required or advisable pursuant to Section 16 of the Securities Exchange Act of
1934 (as amended) and the rules and regulations promulgated thereunder, or any
successor laws and regulations, as a consequence of the undersigned's ownership,
acquisition or disposition of securities of theCompany; and

    3.   Do all acts necessary in order to file such forms with the SEC, any
securities exchange or national association, the Company and such other person
or agency as the attorney- in-fact shall deem appropriate.

      The undersigned hereby ratifies and confirms all that said attorneys-in-
fact and agent shall do or cause to be done by virtue hereof.  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 (as amended).

      This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms ID, 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 Company and the foregoing attorneys-in- fact.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 20 day of May, 2015.



                                   /s/ Edward A. Ebbers
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                                   Signature

                                   Edward A. Ebbers
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                                   Printed Name