@PatJ, I've been using Neurobiologix PEA Soothe. My doctor, Kendal Stewart, formulated it, and he gave me some samples.
The reason he gave me samples is that I mentioned that although I've gotten rid of almost all my IBS with diet and supplements, I still had a trace left. PEA helps with IBS, and I do have to say that my IBS is entirely gone now although I might always have to take supps. and avoid dairy (sucky, sucky, sucky!!!).
At first the PEA did help with my back pain and also helped a little with sleep, but I don't think the effect has lasted with continued use. I'll see if those effects come back once the PEA Soothe is back in stock. It's been really popular and is on back order.