Nutradyl provides essential chondro-nutrients helping to maintain your dog’s joint cartilage. This means better mobility and less stiffness over the long-term and in your dog’s old age. Nutradyl is suitable for concurrent use with conventional NSAID preparations. The supplement contains Omega 3 fatty acids, green-lipped mussel extract, glucosamine and MSM to bring relief to stiff joints. Nutradyl, a supplement by Zoetis.