SCHEDULE 13D JOINT FILING AGREEMENT

EXHIBIT 1

SCHEDULE 13D JOINT FILING AGREEMENT

The undersigned and each other person executing this joint filing agreement (this “Agreement”) agree as follows:

(i)           The undersigned and each other person executing this Agreement are individually eligible to use the Schedule 13D to which this Exhibit is attached and such Schedule 13D is filed on behalf of the undersigned and each other person executing this Agreement; and

(ii)          The undersigned and each other person executing this Agreement are responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained herein; but none of the undersigned or any other person executing this Agreement is responsible for the completeness or accuracy of the information statement concerning any other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

This Agreement may be executed, in any number of counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same instrument.

DATED: February 22, 2011

	By:	/s/ Xxxxx X. Xxxxxxxx
	Name:	Xxxxx X. Xxxxxxxx

	SUN PHARMACEUTICAL INDUSTRIES LIMITED
	By:	/s/ Xxxxx X. Xxxxxxxx
	Name:	Xxxxx X. Xxxxxxxx
	Title:	Managing Director

	SUN PHARMA GLOBAL, INC
	By:	/s/ Xxxxx Xxxxx
	Name:	Xxxxx Xxxxx
	Title:	Director