On March 17, 2009, Mannatech, Incorporated ("Mannatech") entered a consulting agreement (the "Consulting Agreement") with Salinda Enterprises, LLC ("Salinda") for the consulting services of Samuel L. Caster, an employee of Salinda and Mannatech's founder, major shareholder and former Chairman of the Board.

Pursuant to the terms of the Consulting Agreement, Mr. Caster will provide Mannatech with consulting services that are mutually agreed to by the parties. Mannatech will pay Mr. Caster $650,000 a year for the services provided under the Consulting Agreement. The Consulting Agreement has a term of one year and may be renewed by Mannatech upon 60 days' notice to Salinda before the expiration of the then current term.

The Consulting Agreement will automatically terminate upon Mr. Caster's death or deemed disability and may be terminated by Mannatech for cause as defined in the Consulting Agreement.

Mannatech may also terminate the Consulting Agreement without cause upon thirty
(30) days written notice to Salinda or Mr. Caster. Upon termination without cause, Mannatech will be required to pay Mr. Caster any amount due under the Consulting Agreement for the remaining months under the then current term.

The Consulting Agreement contains a non-competition provision extending for the term of the Consulting Agreement and a non-solicitation provision extending until two years after the termination of the Consulting Agreement.

The above summary of the material terms of the Consulting Agreement is qualified by reference to the text of the Consulting Agreement, which is filed herewith as Exhibit 10.1, and incorporated herein by reference.

(d) Exhibits.

Exhibit Exhibit

Number
 10.1*  Consulting Agreement, dated March 17, 2009, between Mannatech,
        Incorporated, Salinda Enterprises, LLC and Samuel L. Caster.

*Filed herewith.