have you tried prilosec? works pretty well-
I used to have unbearable heartburn. I could get a wicked case just by drinking water. Foods like pizza were out of the question.
Then a friend recommended I take a Prilosec pill every other day. I did and the heartburn stopped. That was eight years ago. I can eat anything I want without the ‘burn. What a relief!
If your on a PPI like Prilosec (Omeprazole) by your doctor do you get lab work done every so often for checking kidney function?