Corta-Vet Canine and Feline HA Oral Syringe for dogs and cats contain a unique formulation of chondroitin and glucosamine, combined with high strength hyaluronic acid, which acts as a support for hardworking joints and those which have experienced excessive wear and tear. Syringe presentation allows the product to be given directly into your pet's mouth, or added to the feed, which ever is easier for you.