VetriScience Laboratories GlycoFlex Plus, Hip and Joint Supplement for Cats, 30 Bite Sized Chews GlycoFlex Plus is a delicious fish flavored soft chew formulated specifically for cats GlycoFlex Plus is veterinarian formulated and approved by our veterinary review board. GlycoFlex is recommended for cats with joint issues, weight related mobility issues and those recovering from orthopedic surgery GlycoFlex Plus includes beneficial levels of the joint supporting nutrients- glucosamine, chondroitin, perna canaliculus, DMG and MSM. VetriScience products are manufactured in the U.S.A. and are backed by a 100% Satisfaction Guarantee.