PAW Osteosupport for dogs contains 100% natural, fresh and pure Green Lipped Mussel, proving omega 3 fatty acids (EPA, ETA and DHA) and glycosaminoglycans (chondroitin sulphates). These nutrients may aid in joint health and the relief of arthritic symptoms in your dog. The symptoms of arthritis may include lameness, stiffness, pain and a reluctance to run & play.