Exhibit 23.1

                    Consent of Independent Registered Public
                                Accounting Firm

We consent to the reference to our firm under the caption "Experts" and to the
use of our report dated February 2, 2005, in Amendment No. 3 to the Registration
Statement (Form S-1 No. 333-120757) and related Prospectus of AlgoRx
Pharmaceuticals, Inc. dated February 3, 2005.




                                                           Ernst & Young LLP


MetroPark, New Jersey



The foregoing consent is in the form that will be signed upon the completion of
the restatement of the capital accounts described in Note 14 to the financial
statements.

                                                       /s/ Ernst & Young LLP


MetroPark, New Jersey
February 2, 2005