EXHIBIT 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Acura Pharmaceuticals, Inc.
Palatine, Illinois
We hereby consent to the incorporation by reference in the Prospectus constituting a part of this Registration Statement of our report dated March 31, 2017, relating to the consolidated financial statements of Acura Pharmaceuticals Inc. appearing in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
/s/ BDO USA LLP
Chicago, Illinois
November 17, 2017