I took Celebrex about 30 years ago for 2 or 3 weeks for sudden onset symptoms that were identical to PMR, but back then it was caused by inhaling xylene fumes for two days while sealing my flooring. Even though I took no other medications at the time, my doctor was reluctant to prescribe it, saying it was "terrible stuff". He told me to stop taking it as soon as I could, which I did. I guess it's a case of listening to your own doctor who knows the whole situation, and hoping they know what they're doing.