Glyco-Flex II Stage II The Glyco Flex Joint Support Stages system has been trusted and recommended by veterinarians for over 30 years. Includes proven joint support ingredients: glucosamine, MSM and GlycOmega Brand perna canaliculus Glyco Flex chewable tablets are chicken flavored. For dogs showing discomfort due to aging, joint disease, hip dysplasia or recovering from orthopedic surgery. Packaging may vary