Hi DToews (any relation to Jonathan?)
I have suffered from heartburn and acid reflux for years after my jpouch & kpouch surgeries. I used Nexium for several years but it started to become ineffective and not much was helping with pain & burn, no matter what I ate. My PCP suggested Dexilant and that has helped tremendously. Your GI or PCP can talk more with you about it but Dexilant has helped. It is a bit expensive ( I believe it will become generic in 2019) but you can find a price reduction card online if your doctor prescribes it to you.
Hope this can help you! Kara