Clinically proven supplement containing glucosamine, chondroitin, MSM, antioxidants, plus perna mussel for medium and large dogs Up to 41% increase in hind leg strength in just 4 weeks Delicious duck-flavored chew is recommended for dogs of all ages needing advanced joint support Powerful combination of ingredients helps cushion joints, promote cartilage building and alleviate discomfort caused by normal daily activities National Animal Supplement Council (NASC) seal of approval so you know you?re buying a product developed to quality standards The GlycoFlex Plus joint supplement for dogs provides clinically proven nutritional joint support for working dog breeds, competitive dogs, and senior dogs. This advanced joint support supplement is suitable for dogs of any age, and is clinically proven to increase hind leg strength up to 41% in just four weeks. Glyco Flex Plus maintains comfort and mobility in dogs, and includes more active ingredients than other leading brands for maximum nutritional absorption and effectiveness. Ingredients:Active Ingredients: Glucosamine Hci (Shrimp and Crab), Perna Canaliculus (Glycoomega Brand Green-Lipped Mussel), Chondroitin Sulfate (Porcine), N,N-Dimetylglycine Hci (D mg), Dl-Alpha Tocopheryl Acetate (Vitamin E), Ascorbic Acid (Vitamin C), Manganese (Mn Proteinate), Grape Seed (Vitis Vinifera) Extract, L-Glutathione, Selenium (Na Selenite). Inactive Ingredients: Arabic Gum, Brewers Yeast, Calcium Sulfate, Canola Oil, Citric Acid, Citrus Pectin, Duck Flavor, Glycerin, Maltodextrin, Mixed Tocopherols, Propionic Acid, Rosemary Extract, Silicon Dioxide, Sodium Alginate, Sorbic Acid, Soy Lecithin, Vegetable Oil, Water.