POWER OF ATTORNEY

     Know all by these presents, that the undersigned hereby constitutes and
appoints each of Jeremy Barr and Evgeniya Berezkina, and with full power of
substitution, as the undersigned's true and lawful attorney-in-fact to:

     (1)   execute for and on behalf of the undersigned, in connection with the
undersigned's beneficial ownership of, or participation in a group with respect
to, securities beneficially owned, directly or indirectly, of scPharmaceuticals
Inc., a Delaware corporation (the "Company"), forms and documents related
specifically to Section 13 and Section 16 of the Securities Exchange Act of 1934
and the rules thereunder (the "Exchange Act"), and any joint filing agreement in
connection with the foregoing;

     (2)   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 forms and
documents related specifically to Section 13 and Section 16 of the Exchange Act,
complete and execute any amendment or amendments thereto, and timely file such
form and documents with the U.S. Securities and Exchange Commission (the "SEC")
and any stock exchange or similar authority; and

     (3)   take any other lawful action of any type whatsoever in connection
with the foregoing which, in the opinion of any 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 any 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 any such attorney-in-fact's discretion.

     The undersigned hereby grants to each such attorney-in-fact with full power
of substitution or revocation, hereby ratifying and confirming all that each
such attorney-in-fact, or each 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.  All lawful acts done by the
attorney-in-fact in this regard shall be deemed to have been done by the
undersigned. 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 13 or Section 16 of the Exchange Act.

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file forms and documents related
specifically to Section 13 and Section 16 of the Exchange Act with respect to
the undersigned's holdings of and transactions in securities issued by the
Company, or for a period of one (1) year, unless earlier revoked by the
undersigned in a signed writing delivered to each of the foregoing attorneys-in-
fact, whichever is earlier.


     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 24th day of November, 2017.


                                   Sun Pharmaceutical Industries Ltd.

                                   By: /s/ Sailesh T. Desai
                                       -----------------------------
                                       Name: Sailesh T. Desai
                                       Title: Director

                                   Sun Pharmaceutical Industries, Inc.

                                   By: /s/ Abhay Gandhi
                                       -----------------------------
                                       Name: Abhay Gandhi
                                       Title: CEO - North America

                                   Sun Pharma (Netherlands) B.V.


                                   By: /s/ Prashant Salva
                                       -----------------------------
                                       Name: Prashant Salva
                                       Title: Director