Glyco-Flex®III Bite-Sized Chews are a nutritional supplement used for rebuilding and maintaining healthy joints, specially formulated for dogs with chronic arthritis. (Pet has a very hard time rising to a standing position and posturing for elimination; is no longer able to exercise.) Contains Perna (green lipped) mussel which is a good source of protein, minerals, and chondroitin sulfates. Glyco-Flex has all the joint maintenance and rebuilding ingredients a pet needs for a healthy and active lifestyle. Active Ingredients:Perna Canaliculus, Methylsulfonylmethane, Glucosamine HCL. Flavor:Chicken Liver.