I've had GERD for 30 years. It was probably originally caused by the first generation NSAIDs I took to try to control my pain. I was never convinced it helped the pain, and it left with with bad GERD. I have run through all available prescription medications. If I skip even one day, I have stomach pain the next. I have moved up the ladder as new medications come out. I currently take Dexilant which works well as long as I take it. It does not matter what I eat, without the meds, I have bad stomach pain.