Frequently Asked Questions
Exclusive New Customer Promotion! Try a
30-day supply of TFXflex™ absolutely free.
This promotion is not available in stores.
TFXflex™ contains UC-II® which have been
clinically proven to be more than 2X as
effective as Glucosamine & Chondroitin.
TFXflex™ is available in GNC stores
nationwide. Click above to find a local GNC
Store near your location.