Arthriti-UM is a dietary supplement which helps maintain bone development and bone growth. Weak joints can be protect and subjected to normal loads again. With Glucosamine, White Shark Cartilage, Devils Claw (Harpagophytum Procumbens), Green Lipped Mussel (Perna Canaliculata) and Vitamin C Arthriti-UM is a totally natural product. Suitable for cats & dogs. Directions for use: Cats & Small Dogs 1/2 tablet twice a day Medium & Large Dogs - 1 tablet twice a day Older Dogs - 1 tablet 3 times a day Contains 90 tablets.