Welcome @psmcdonough, I have not heard of systemic enzyme therapy used for PMR bud did just now find some information from August 2021 on fighting inflammation topic --- Reducing Bruising, Swelling and Pain with Systemic Proteolytic Multi-Enzyme Therapy: https://nutritionreview.org/2021/08/reducing-bruising-swelling-and-pain-with-systemic-proteolytic-multi-enzyme-therapy/

Are you looking for an alternative to prednisone to treat PMR?