Used it for years as has my wife and a number of people we know. It works. Like a lot of treatments, unfortunately it doesn’t work for everyone, nor does it work to the same degree for those it does help.
I also know a doctor that does research into supplements and his opinion is that it has benefits.
Magic bullet? No. Nothing is.
Do you have to keep taking it? Or, can you stop after awhile?
Might try adding Collagen, after all that is the key thing that gets depleted in joints. I use the glucosamine and chondroitin and didn’t get as much relief as I had hoped, but when I added 2 Collagen tablets daily within a few weeks noticed the difference in the knuckles of my right hand, where the OA is the worse. Daily pain is less, unless I really over do it.