Matrixx Initiatives (MTXX) SC 13D ProPhase Labs / MATRIXX INITIATIVES ownership change

EXHIBIT 99.1

SCHEDULE 13D JOINT FILING AGREEMENT

In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to jointly file the Schedule 13D to which this joint filing agreement is attached, and have duly executed this joint filing agreement as of the date set forth below.

Date: September 14, 2012

MATRIXX INITIATIVES, INC.
By:	/s/ Marylou Arnett
Name:	Marylou Arnett
Title:	Chief Executive Officer
WONDER HOLDINGS ACQUISITION CORP.
By:	/s/ Brian D. Schwartz
Name:	Brian D. Schwartz
Title:	President
H.I.G. BAYSIDE DEBT & LBO FUND II, L.P.
By:	H.I.G. Bayside Advisors II, LLC
Its:	General Partner
By:	H.I.G.-GPII, Inc.
Its:	Manager
By:	/s/ Richard H. Siegel
Name:	Richard H. Siegel
Its:	Vice President and General Counsel
H.I.G. BAYSIDE ADVISORS II, LLC
By:	H.I.G.-GPII, Inc.
Its:	Manager
By:	/s/ Richard H. Siegel
Name:	Richard H. Siegel
Its:	Vice President and General Counsel
H.I.G.-GPII, INC.
By:	/s/ Richard H. Siegel
Name:	Richard H. Siegel
Its:	Vice President and General Counsel
/s/ Sami W. Mnaymneh
Sami W. Mnaymneh
/s/ Anthony A. Tamer
Anthony A. Tamer