My reaction to naproxen would typically only last a few hours.

I would suggest you ask your rheumy about trying a different NSAID. Mobic (Meloxicam) and Celebrex (Celecoxib) are supposed to be easier to take. There are lots of others you can try. And if you aren't already, ask about taking Prilosec or Nexium along with the NSAID to help protect your stomach and gut.

Ginny - 58 year old female
Dx with USpA in March 2013; changed to AS in July 2015
Iritis and Scleritis, both currently in remission
unicompartmental knee replacements: right-June 2014, left-Aug 2018
MTX, Humira, Cyclobenzaprine, plus Celebrex as needed
Supplements: Folic Acid, Vitamin A, Vitamin D, Calcium, Fish Oil, Culturelle probiotic, Melatonin (as needed)