Osteosupport® contains green lipped mussel powder (Perna128®), providing omega 3 fatty acids (EPA, DHA and ETA) and naturally occuring glycosaminoglycans (chondroitin sulphates). These nutrients may aid in joint health and the relief of arthritic symptoms in dogs. The symptoms of arthritis may include lameness, stiffness, pain and a reluctance to run and play.