I can try to help. Just my info from here and google search. I have not taken Kevzara. There are a couple of drugs that can now be used for PMR inflammation. Kevzara and Acterma. Both are IL-6 inhibitors. Acterma works better with GCA. Since cortisol production is causing your inability to taper due to steroids, these biologics are being added to help prevent PMR flares. This helps with your steroid taper. However neither of drugs will work if its not PMR. They also do nothing for cortisol. So your pain most likely will persist when trying to taper. Others on here have said just that. Drug was not helpful. Many have also said their liver function tests were troublesome. Others have said its expensive and not easy to get. Next to an immune blocker like Methotrexate I have not seen where much else works but a very slow taper. The problem is your body producing cortisol.