Pure Balance Pro+ Flex care dog Soft Chew helps ease joint stiffness due to normal daily exercise and activity. Synergistic ingredients like Glucosamine, Chondroitin and MSM provide essential building block of healthy joint cartilage and help to enhance the functions of joint and connective tissues. It also contains fish oil which provides omega 3 fatty acids (EPA & DHA) to keep your dog healthy, active and strong.