Has anyone had a dog that had adverse effects from Cartrophen. My boy is 12 and five months, has laryngeal paralysis but doesn’t seem to bother him that much. His back legs were wobbly and he slowed up with walking. He was taking Metacam but it didn’t seem to have much effect. He then went on to Cartrophen and after the first week he declined. Initially it is a four week course with an injection once a week. He has completed the 4 week course but has declined even more. Has anyone had this happen or do you think it’s a coincidence, like my vet does.