Hi SSimon,
have you tried taking anything natural? I have alot of problems taking ppIs & I have to take them every other day sometimes. I get lots of problems with my chest, feeling breathless always feeling like its congested too. I also feel like I have a cold or flu like symptoms at times. I use slipperyelm, I dont know if you have heard of it, it sounds like a witches brew but it seems to line the stomach a bit. I got mine at health food shop, it comes in tablets & powder. Also I try apple cider vinger with honey & boiled water. I dont know if thats any good for you but its worth a try, good luck let me know how you get on

Cheryl.