Exhibit 99.1
February 18, 2007
Via Hand Delivery
Dr. John Axford
Department of Biochemistry and Immunology
St. George’s Hospital Medical School
Cramner Terrace
London SW17 ORE
United Kingdom
RE: | First Amendment to Spokesperson Agreement dated March 9, 2006 |
Dear Dr. Axford,
We have determined that it is the Company’s best interest to extend the Term of the Spokesperson Agreement dated March 9, 2006 (attached hereto asExhibit “A”) for an additional twelve-month term, beginning March 9, 2007 and ending March 10, 2008. The extension to the Term notwithstanding, all other terms and conditions of the March 9, 2006 Spokesperson Agreement shall remain in full force and effect.
If the forgoing extension is acceptable to you, please execute and return a duplicate of the original of this letter, such to constitute the agreement between us.
Very Truly Yours,
/s/ Samuel L. Caster
Samuel L. Caster
Chairman & CEO
Mannatech, Inc.
ACCEPTED AND AGREED
/s/ Dr. John Axford
Dr. John Axford