POWER OF ATTORNEY



 The undersigned hereby constitutes and appoints each of Jennifer K. Bielasz

or her successor, Kevin R. Lind or his successor, Steven W. Spector or his successor,

and each of them acting singly, as the true and lawful attorney-in-fact of the

undersigned to:



(1)  execute for and on behalf of the undersigned, in the undersigned's capacity as

an employee, officer and/or director (or pending employee, officer and/or

director) of Arena Pharmaceuticals, Inc. (the "Company"), Form IDs and

Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange

Act of 1934 and the rules thereunder;



(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 Form ID, 3, 4,

or 5, complete and execute any amendment or amendments thereto, and file

such form with the United States Securities and Exchange Commission and any

stock exchange or similar authority; and



(3) 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 (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 Company, attention the foregoing attorneys-in-fact.



      This Power of Attorney supersedes any previous power of attorney granted by the

undersigned, in the undersigned's capacity as an employee, officer and/or director of the

Company, and relating to Form ID, 3, 4, or 5.



       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be

executed as of this 5th day of August 2016.





   /s/ Vincent E. Aurentz

   Signature



  Vincent E. Aurentz

   Print Name