I took our dog to the vet last week and he was diagnosed with arthritis and hypothyroidism. The vet put him on Soloxine for the thyroid and Rimadyl for the arthritis. I was speaking with a woman on another forum and she said that Rimadyl is dangerous and to put him on something else. I just wanted to get another opinion on this before speaking with the vet. He runs out of his samples on Friday and could switch him at that time if necessary.