VetriScience Laboratories’ Healthy Hip & Joint for Cats Chews combines the powerful benefits of Perna canaliculus with other ingredients for joint support, such as glucosamine, MSM, manganese, and our patented DMG, to support joint comfort, structure and function. GlycoFLEX 2 Feline Bite-Sized Chews are formulated for the support of joints in cats at any stage of life.