Counterpart to Registration Rights Agreement July 10, 2014

Exhibit 10.188

Counterpart to Registration Rights Agreement

July 10, 2014

The undersigned hereby absolutely, unconditionally and irrevocably agrees as a Guarantor, as defined in the Registration Rights Agreement, dated June 30, 2014 by and among Endo Finance LLC, a Delaware limited liability company and Endo Xxxxx Inc., a Delaware corporation, the Guarantors party thereto, Citigroup Global Markets Inc. and RBC Capital Markets, relating to the 5.375% Senior Notes due 2023, to be bound by the terms and provisions of such Registration Rights Agreement.

Exhibit 10.188

IN WITNESS WHEREOF, the undersigned has executed this counterpart as of the date first written above.

ENDO NETHERLANDS B.V.

                        By:     /s/ Xxxxxx Xxxxx                                 Name: Xxxxxx Xxxxx                         Title: Managing Director A                         By:     /s/ Gert Xxx Xxxxxxxx                                 Name: Gert Xxx Xxxxxxxx                         Title: Managing Director B