COPPELL, TX -- (MARKET WIRE) -- 03/15/07 -- Mannatech, Inc. (NASDAQ: MTEX) today reported record sales for its fourth quarter 2006 of $106.8 million, up 5.3% compared to the same quarter in 2005. Earnings per share decreased 11.8% to $0.30 per diluted share compared to fourth quarter 2005 earnings of $0.34 per diluted share, as the result of a significant investment in the global launch of two major proprietary products. Net income for the quarter was $8.2 million with a net profit to net sales ratio of 7.7% compared to net income of $9.4 million with a net profit to net sales ratio of 9.3% for the same quarter of 2005. Pretax profit was $12.2 million, down 19.0% from prior year's fourth quarter of $15.1 million.

Net sales growth for the quarter was driven by an increase in large pack purchases as well as the launch in late November of PhytoMatrix, a proprietary new multi-vitamin product. Total current Mannatech independent Associates and Members grew to 544,000 as of December 31, 2006, an increase of 11.0% compared to 490,000 as of December 31, 2005. The record current independent Associate and Member count resulted from a higher retention of continuing independent Associates, partially offset by a decrease in new independent Associates for the year.

Sam Caster, Chairman of the Board and CEO, commented, "We're encouraged by strengthening sales in the fourth quarter following softness in the previous quarter. The fourth quarter launch of PhytoMatrix along with sales initiatives helped drive our sales momentum. Momentum continues to build so far in the first quarter of 2007 with higher independent Associate and Member recruitment in anticipation of the global roll-out of our Optimal Skin Care System, primarily in the U.S. and Canada."

The company also announced that the full implementation of the new integrated computer ERP system is on track for the end of March. The required system shutdown for the changeover will result in the shift of approximately one week of sales volume into the second quarter. Mr. Caster added, "The new ERP system with its 'state-of-the-art' fully-integrated processing will allow us to enter new markets faster and more efficiently, streamline the Associate commission payment process, and enhance our ability to manage our business on a global scale."

Annual consolidated net sales for 2006 were a record $410.1 million, up 5.3% from prior year sales of $389.4 million. Sales of finished product grew 8.5% during 2006 as compared to the prior year. Net income for 2006 grew to $32.4 million, a 13.1% increase compared to the prior year net income of $28.6 million and diluted earnings per share grew to $1.19, up 15.5% as compared to $1.03 in the prior year.

      Net Sales in Dollars and as a Percentage of Consolidated Net Sales

            First Quarter   Second Quarter  Third Quarter   Fourth Quarter
                 2006            2006            2006            2006
            --------------- --------------- --------------- ---------------
                          (in millions, except percentages)
United
 States     $  67.1   67.8% $  70.0   66.8% $  65.7   66.0% $  68.6   64.2%
Canada          7.3    7.4%     7.6    7.3%     6.7    6.7%     7.0    6.6%
Australia       7.9    8.0%     8.9    8.5%     7.5    7.5%     7.7    7.2%
United
 Kingdom        2.0    2.0%     1.9    1.8%     1.8    1.9%     1.8    1.7%
Japan           9.2    9.3%    10.9   10.4%    10.0   10.0%    11.3   10.6%
New Zealand     2.5    2.5%     0.8    0.7%     2.1    2.1%     2.1    2.0%
Republic of
 Korea          1.6    1.6%     2.3    2.2%     3.3    3.3%     5.2    4.9%
Taiwan          0.8    0.8%     1.0    1.0%     0.8    0.8%     1.1    1.0%
Denmark         0.6    0.6%     0.9    0.9%     1.0    1.0%     1.0    0.9%
Germany*          -      -%     0.5    0.4%     0.6    0.7%     1.0    0.9%
            ------- ------  ------- ------  ------- ------  ------- ------
Total       $  99.0    100% $ 104.8    100% $  99.5    100% $ 106.8    100%
            ======= ======  ======= ======  ======= ======  ======= ======

*United Kingdom began shipping products to Germany in March 2006.

The number of new and continuing independent Associates and Members, who purchased our packs during the last 12-months ended December 31, were as follows:

                                  For the year ended December 31,
                        ---------------------------------------------------
                              2004              2005             2006
                        ----------------- ----------------- ---------------
Current independent
 Associates and Members

New                      178,000    48.2%  230,000    47.0% 203,000   37.4%
Continuing               191,000    51.8%  260,000    53.0% 341,000   62.6%
                        -------- -------  -------- -------  ------- ------
Total                    369,000   100.0%  490,000   100.0% 544,000  100.0%
                        ======== =======  ======== =======  ======= ======



     Net Sales in Dollars and as a Percentage of Consolidated Net Sales

                                   For the year ended December 31,
                            -----------------------------------------------
                                 2004            2005            2006
                            --------------- --------------- ---------------
                                  (in millions, except percentages)
United States               $ 192.5   65.4% $ 259.4   66.6% $ 271.4   66.2%
Canada                         22.2    7.5%    28.0    7.2%    28.6    7.0%
Australia                      30.6   10.4%    35.7    9.2%    30.5    7.4%
United Kingdom                 10.5    3.6%     8.9    2.3%     7.5    1.8%
Japan                          24.5    8.3%    35.4    9.1%    41.4   10.1%
New Zealand                    12.9    4.4%    14.6    3.7%     8.9    2.2%
Republic of Korea               1.3    0.4%     4.6    1.2%    12.4    3.0%
Taiwan                            -      -%     2.3    0.6%     3.7    0.9%
Denmark                           -      -%     0.5    0.1%     3.4    0.8%
Germany*                          -      -%       -      -%     2.3    0.6%
                            ------- ------  ------- ------  ------- ------
Totals                      $ 294.5    100% $ 389.4    100% $ 410.1    100%
                            ======= ======  ======= ======  ======= ======

*United Kingdom began shipping products to Germany in March 2006.

Conference Call

Mannatech will hold a conference call and webcast to discuss this announcement with investors on Friday, March 16, 2007, at 9:00 a.m. Central Daylight Time, 10:00 a.m. Eastern Daylight Time. Investors may listen to the call by accessing Mannatech's website at www.mannatech.com.

About Mannatech

Mannatech, Incorporated is a global wellness solutions provider of innovative, high-quality, proprietary nutritional supplements, topical and skin-care products, and weight management products sold through independent Associates and Members located in the United States and the international markets of Canada, Australia, the United Kingdom, Japan, New Zealand, the Republic of Korea, Taiwan, Denmark, and Germany.

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 "may," "believes," "enthusiastic," "encouraged," "demonstrates," "intends," "optimistic," and "plans" 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 new international markets. Although Mannatech believes that its expectations, statements, and assumptions reflected in these forward-looking statements are reasonable, it cautions its 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 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.

Contact Information:
Gary Spinell
VP of Treasury and Investor Relations
(972) 471-6512
ir@mannatech.com
Corporate web site: www.mannatech.com

                          MANNATECH, INCORPORATED
                        CONSOLIDATED BALANCE SHEETS
          (in thousands, except share and per share information)

                                                  December 31,
                                              --------------------
                                                 2005       2006
                                              ---------  ---------
                      ASSETS
Cash and cash equivalents                     $  56,207  $  45,701
Short-term investments                            1,974         --
Restricted cash                                   2,777      2,251
Accounts receivable, net of allowance of
 $0.2 million in 2006                               701        999
Income tax receivable                                --      2,155
Inventories, net                                 19,811     23,923
Prepaid expenses and other current assets         3,471      4,323
Deferred tax assets                                 671      1,478
                                              ---------  ---------
  Total current assets                           85,612     80,830
Long-term investments                            15,375     25,375
Property and equipment, net                      10,951     16,523
Construction in progress                          8,157     24,725
Long-term restricted cash                         1,476      3,132
Other assets                                      1,121      1,372
Long-term deferred tax assets                       103        278
                                              ---------  ---------
  Total assets                                $ 122,795  $ 152,235
                                              =========  =========

       LIABILITIES AND SHAREHOLDERS’ EQUITY
Current portion of capital leases             $      23  $      92
Accounts payable                                  5,476      3,339
Accrued expenses                                 16,941     26,841
Commissions and incentives payable               15,588     15,511
Taxes payable                                     5,773      3,556
Deferred revenue                                  3,712      2,697
                                              ---------  ---------
  Total current liabilities                      47,513     52,036
Capital leases, excluding current portion            --        349
Long-term royalties due to an affiliate           3,341      2,879
Long-term deferred tax liabilities                1,086      7,444
Other long-term liabilities                         537        730
                                              ---------  ---------
  Total liabilities                              52,477     63,438

Commitments and contingencies

Shareholders’ equity:
Preferred stock, $0.01 par value, 1,000,000
 shares authorized, no shares issued or
 outstanding                                         --         --
Common stock, $0.0001 par value, 99,000,000
 shares authorized, 27,404,513 shares issued
 and 26,738,364 outstanding in 2005 and
 27,617,081 shares issued and 26,409,987
 outstanding in 2006                                  3          3
Additional paid-in capital                       36,699     38,941
Retained earnings                                42,505     66,393
Accumulated other comprehensive loss             (1,098)    (1,749)
                                              ---------  ---------
                                                 78,109    103,588
Less treasury stock, at cost, 666,149 shares
 in 2005 and 1,207,094 shares in 2006            (7,791)   (14,791)
                                              ---------  ---------
  Total shareholders’ equity                     70,318     88,797
                                              ---------  ---------
  Total liabilities and shareholders’ equity  $ 122,795  $ 152,235
                                              =========  =========



                          MANNATECH, INCORPORATED
                  CONSOLIDATED STATEMENTS OF OPERATIONS
               (in thousands, except per share information)

                                 Three months ended   Twelve months ended
                                     December 31,         December 31,
                                --------------------  --------------------
                                   2005       2006       2005       2006
                                ---------  ---------  ---------  ---------
Net sales                       $ 101,423  $ 106,769  $ 389,383  $ 410,069
Cost of sales                      14,842     15,684     58,028     58,461
Commissions and incentives         42,825     46,866    172,151    182,215
                                ---------  ---------  ---------  ---------
                                   57,667     62,550    230,179    240,676
                                ---------  ---------  ---------  ---------
Gross profit                       43,756     44,219    159,204    169,393
Operating expenses:
     Selling and administrative
      expenses                     17,328     19,324     65,923     71,892
     Depreciation and
      amortization                  1,059      1,417      3,905      4,960
     Other operating costs         10,025     12,286     43,766     48,467
                                ---------  ---------  ---------  ---------
         Total operating
          expenses                 28,412     33,027    113,594    125,319
                                ---------  ---------  ---------  ---------
Income from operations             15,344     11,192     45,610     44,074
                                ---------  ---------  ---------  ---------
   Interest income                    524        750      1,778      2,513
   Other income (expense), net       (752)       297     (1,940)     1,101
                                ---------  ---------  ---------  ---------
Income before income taxes         15,116     12,239     45,448     47,688

   Provision for income taxes      (5,681)    (4,057)   (16,801)   (15,298)
                                ---------  ---------  ---------  ---------
Net income                      $   9,435  $   8,182  $  28,647  $  32,390
                                =========  =========  =========  =========

Earnings per common share:
   Basic                        $    0.35  $    0.31  $    1.06  $    1.22
                                =========  =========  =========  =========
   Diluted                      $    0.34  $    0.30  $    1.03  $    1.19
                                =========  =========  =========  =========

Weighted-average common shares
 outstanding:
   Basic                           26,744     26,405     26,990     26,598
                                =========  =========  =========  =========
   Diluted                         27,395     27,040     27,771     27,219
                                =========  =========  =========  =========

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Contact Information:
Gary Spinell
VP of Treasury and Investor Relations
(972) 471-6512
Email Contact
Corporate web site: www.mannatech.com