6 PACK GlycoFlex 3. These delicious, chicken-flavored, soft chews are recommended to provide maximum support for joint function and connective tissue health in dogs with severe joint dysfunction. GlycoFlex® 3 represents Stage 3 of our comprehensive stage of life program for joint support. It's also recommended by veterinarians for geriatric and working dogs as well as a follow-up to orthopedic surgery. Effective alternative available for only $24.99 (120 Soft Chews) Comparison between old and new formulas.