Glucosamine & Chodroitin with Green Tea and Reishi, Joint Supplement for Dogs, 30-Day Supply Glucosamine helps form and repair cartilage, which cushions and protects joints during walks and exercise. Chondroitin gives cartilage elasticity. Our supplement offers joint support and cartilage health for couch jumpers, runners, agility dogs, senior dogs, and chronically sore dogs. The ingredients alsostrengthencartilage, while simultaneously inhibiting the enzymes that break it down. The amount of glucosamine and chondroitin produced in the body decreases with age. Supplementing senior dogs can help restore the proper balance. Natural, veterinarian-formulated and tailor-dosed tablets are pork flavored for dogs of all sizes and life stages. Gluten-free, made in the U.S.A.