For sure, Celebrex, an NSAID. I had really bad pain and ended up in the hospital and was given Toradol and it helped immediately, and then the doctor gave me a prescription for celebrex afterwards, I took it daily for a while and that was years ago, now I take it as backup if things get bad.
Ye, I suspected that my gut bacteria was a big part of the issue. I found when I did the transplants it always helped. But you have to jump through a lot of hoops to do it safely and effectively. And it may be illegal. And of course, the ick factor is real.