Exhibit 21 LIST OF SUBSIDIARIES Mannatech Australia PTY Limited - incorporated in April 1998 in Australia and currently operating in St. Leonards, Ausralia. Mannatech Limited - incorporated on December 1, 1998 in the Republic of Ireland and currently dormant pending the start-up operations in the Republic of Ireland. Mannatech Ltd., - incorporated in April 1999 in the United Kingdom and currently operating in Basingstoke, Hampshire. Mannatech Foreign Sales Corporation - incorporated on May 1, 1999 in Barbados to act as a "foreign sales corporation" as defined in the United States Internal Revenue Code. This subsidiary has ceased operations since December 31, 2000. Internet Health Group, Inc. - incorporated on May 7, 1999 in Texas and ceased its operations on December 29, 2000. Mannatech Payment Services Incorporated - incorporated on April 11, 2000 in Texas to facilitate payment services for Mannatech Japan, Inc. Mannatech Japan, Inc. - incorporated on January 21, 2000 in Japan and currently operating in Tokyo, Japan. Mannatech Limited - incorporated on February 14, 2000 in New Zealand and currently dormant.