Mannatech (MTEX) 10-K 2022 FY Annual report

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Mannatech, Incorporated

Flower Mound, Texas

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 333-169468 and 333-169774) and Form S-8 (Nos. 333-72767, 333-77227, 333-94519, 333-47752, 333-113975, 333-153199, 333-182676, 

333-197400 and 333-220539) of Mannatech, Incorporated and Subsidiaries of our report dated March 17, 2023, relating to the consolidated financial statements and financial statement schedule, which appears in this Form 10-K.

/s/ BDO USA, LLP

BDO USA, LLP

Dallas, TX

March 17, 2023