exhibit_23-1.htm

We hereby consent to the incorporation by reference in the registration statements of Mannatech, Incorporated and subsidiaries (the “Company”) on Forms S-8 (File No. 333-72767, effective February 22, 1999; File No. 333-77227, effective April 28, 1999; File No. 333-94519, effective January 12,2000; File No. 333-47752, effective October 11, 2000; File No. 333-113975, effective March 26, 2004, File No. 333-153199, effective August 26, 2008 and File No. 333-169774, effective October 28, 2010) of our report dated March 10, 2011, relating to the consolidated financial statements, which appear in this Form 10-K. We also consent to the incorporation by reference of our report dated March 10, 2011 relating to the financial statement schedule, which appears in this Form 10-K.