I would never EVER recommend this product to anyone who actually love their dogs! My family has an older pit-bull. He's a sweet old man who is a total lover face. As he's aged his hips have gotten bad and he sometimes has a hard time getting up and moving. Other days he runs and frolics in the yard like a puppy. He was prescribed this medication to help with the joint discomfort. What happened next was a thousand times worse than hip and joint pain! My poor doggie became so sick we were afraid we were going to lose him. He could not stand up on his own. My husband had to carry him outside and once there, he couldn't even lift his leg to pee. He would wet himself just laying on the ground and that is not even close to normal behavior. We took him back to the vet and stopped the Cosequin but there was nothing else they could do for him. We just had to wait it out and see. Thankfully, he made a full recovery but I am so mad at the company that made these. No where was there any mention of the possible side effects. At least none as drastic as what we encountered. I don't believe that it was a coincidence, nothing else about his diet or environment changed before the illness.