Mannatech Receives Wells Notice on Previously Disclosed Inquiry

Mannatech, Incorporated ("Mannatech”) (NASDAQ: MTEX), a leading developer and provider of dietary supplements and skin care solutions, today announced that it and its Chief Financial Officer and the Chairman of Mannatech’s Audit Committee have received a notification, commonly referred to as a "Wells Notice,” from the staff of the Division of Enforcement (the "Staff”) of the United States Securities and Exchange Commission (the "SEC”) related to the timing and completeness of Mannatech’s October 2007 disclosure regarding its dismissal of Grant Thornton LLP as its independent registered public accountants. The Wells Notice stems from an informal inquiry commenced by the SEC with respect to the disclosure, which informal inquiry was previously disclosed by Mannatech in its Form 10-K for the year ended December 31, 2007, which was filed with the SEC on March 17, 2008.

The Wells Notice indicates that the Staff is considering recommending to the SEC that the SEC bring cease and desist proceedings against Mannatech and the individuals alleging that it violated, and the individuals allegedly caused it to violate, Section 13(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act”) and Rules 13a-11 and 12b-20 thereunder.

Under the SEC’s procedures, a Wells Notice from the SEC affords recipients an opportunity to present information and defenses in response to the allegations to the Staff prior to the Staff making a formal recommendation to the SEC whether any action should be authorized. There can be no assurance that the SEC will not bring an enforcement action against Mannatech or its officers or directors.