I took Buddy to the vet to have a look at. At 12 his back legs (joints) were giving him grief and lots of pain. He was wobbly and limping and you could see that he was in a lot of discomfort.
I noticed a big difference after a week. No more limping, getting around much better, and less discomfort. The biggest test was after going for a hike. After the hike, he was normally very stiff and sore and limping more than usual. After the 60 days trial, there wasn’t any more limping even after going for a hike.