I can share my experience with you~~I have been taking Cymbalta for probably 10 years, I'm guessing around 2013 or so. In 2019 I was finally diagnosed with GCA after losing sight in one eye and started. By October of that year, I was on 80 mg of steroids and the biologic Actemra.
Personally, I never noticed a thing. I will say I know I'm going to feel certain things from all the steroids, from the autoimmune disease as well as other chronic illnesses and meds....I wouldn't know what to blame if I felt a little something. I do rest if I'm super fatigued ..but all in all, I feel good. 💞