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Mannatech’s BounceBack™ Capsules Certified for Purity

Marks company’s ninth product certification from NSF International

COPPELL, TEXAS October 28, 2009 - Mannatech, Incorporated (NASDAQ - MTEX), a global pioneer in the development of high-quality health, weight and fitness, and skin care solutions based on nutritional science, announced today that the purity of Mannatech’s BounceBack™ capsules has been certified to show it meets their label claims for ingredients and purity by NSF International, an independent, accredited public health testing organization.
Mannatech’s BounceBack formula was certified according to the NSF/ANSI 173 Dietary Supplement Standard—the only American National Standard for dietary supplements. Mannatech intends to carry the NSF certification mark on the supplement’s labels and promotional materials to demonstrate compliance.

To date, Mannatech has eight additional products certified by NSF including Ambrotose® complex powder and capsules, Advanced Ambrotose® powder and capsules, Ambrotose AO® capsules, Optimal Support Packets, PLUS™ caplets and PhytoMatrix® caplets.

“Consumers today are insisting on access to high quality products with proven safety and performance,” said Dr. Robert Sinnott, chief science officer for Mannatech. “In order to meet that demand, Mannatech is committed to producing the highest standards of product quality and science. Not only have we earned NSF certification, but we ensure all of our manufacturing partners adhere to current Good Manufacturing Practices (GMPs), our industry’s standards for ensuring high quality products.”

A 2008 randomized, double-blind, placebo-controlled, crossover human study indicated that Mannatech’s BounceBack capsules when taken over time significantly reduce muscle soreness after overexertion.*† The results, published in the Journal of the International Society of Sports Nutrition, complement the already established benefits of BounceBack capsules in reducing soreness and stiffness from physical activity, in addition to supporting optimal joint and cartilage health.*

NSF International—a not-for-profit, public health certification organization—ensures a product’s label reflects the contents of the supplement, that all ingredients are openly disclosed on the label and that the product’s purity is acceptable. Additionally, NSF assesses each manufacturing site to ensure it complies with GMPs; NSF will not certify a product unless the manufacturer meets all of the rigorous audit requirements.

“By obtaining certification for BounceBack capsules, Mannatech continues to demonstrate its dedication and commitment to excellence,” said Ed Wyszumiala, general manager of NSF international’s dietary supplements programs.

Mannatech will continue working with NSF to certify additional products in Mannatech’s portfolio.

About Mannatech
Mannatech, Incorporated develops high-quality health, weight and fitness, and skin care products that are based on the solid foundation of nutritional science and development standards. These proprietary products are available through independent sales Associates around the globe including the United States, Canada, South Africa, Australia, New Zealand, Austria, Denmark, Germany, Norway, Sweden, the Netherlands, the United Kingdom, Japan, Taiwan, Singapore and the Republic of Korea.

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Please Note: This release contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. These forward-looking statements generally can be identified by use of phrases or terminology such as “intend,” ”believe,” “expect” or “will allow” or other similar words or the negative of such terminology. Similarly, descriptions of Mannatech’s objectives, strategies, plans, goals or targets contained herein are also considered forward-looking statements. Mannatech believes this release should be read in conjunction with all of its filings with the United States Securities and Exchange Commission and cautions its readers that these forward-looking statements are subject to certain events, risks, uncertainties, and other factors. Some of these factors include, among others, Mannatech’s inability to attract and retain associates and members, increases in competition, litigation, regulatory changes, and its planned growth into newinternational markets. Although Mannatech believes that the expectations, statements, and assumptions reflected in these forward-looking statements are reasonable, it cautions readers to always consider all of the risk factors and any other cautionary statements carefully in evaluating each forward-looking statement in this release, as well as those set forth in its latest Annual Report on Form 10-K and Quarterly Report on Form 10-Q, and other filings filed with the United States Securities and Exchange Commission, including its current reports on Form 8-K. All of the forward-looking statements contained herein speak only as of the date of this release.

Media Contact Information:
Tyler Horton
214-252-1779 † Allow 4 to 6 weeks for optimal benefits.