Supporting healthy joints in adult dogs Optimizor Special Diet Joint Care has been expertly formulated to support healthy joints in adult dogs. It contains green-lipped mussel extract, which assists in relieving exercise-induced muscle soreness. It’s a rich source of Omega-3 fatty acids, helping to relieve joint pain and reduce inflammation and it is naturally high in glucosamine and chondroitin, which helps to protect joint cartilage, in turn helping to improve your dog’s mobility.