Fish Oil. One of the surgeons we spoke with regarding an unrelated issue to arthritis gave us a brochure published by the Univ. of Wisc. which highly recommended fish oil for arthritis pain --- in addtion to anti-imflammatories.
Glucosamine, my dog was limping, I started giving it to her and it’s helped a lot. It to 2-3 weeks to see the change. I ran out and it took a while to get a new supply and she started limping again, a few days after giving them to her again she showed big improvements.
Dasuquin is the best thing for joint health. My cat had a limp for a year and it was the only thing that helps. I'd recommend sprinkling it on their food from a capsule. Seeing results can take 4-6 weeks.
OP there’s lots of comments on here suggesting CBD. CBD hasn’t been proven to be safe for pets yet, preliminary testing suggests it may cause kidney problems. That’s why vets don’t recommend it. Most otc CBD also contains THC which is toxic to dogs so if you choose to use CBD at least make sure it’s a brand with no THC