I've been having the same problem on and
off for over a year. I went to the doctor and
was thoroughly tested. They couldn't figure out what was wrong. So they decided to try giving me a daily prescription of Protonix. It worked miracles. The next day I was right as rain. After a coup
le of weeks I weaned myself off of the pills. Now I take an over-the-counter ant-acid as soon as I start burping with any hint of bad taste and
a few hours later I am almost back to normal.