DogtorRx™ Age Defense is a veterinary grade pet supplement to provide whole-body rejuvenation to pets through the natural power of growth-factors. DogtorRx™ Age Defense is especially beneficial to geriatric dogs with age-related symptoms accompanied by chronic pain. DogtorRx™ Age Defense is capable of resetting the body’s own regeneration capability to repair damaged joint tissues and address age-related conditions such as arthritis, giving your pup the strength of mobility.