Old time method that works for me and those that I have shared it with. Once in a while I get bad enough that I cannot lay down without tasting stomach acid. When this occurs I go and buy a bag of apples, eat ONE at bedtime and maybe more through the day , cause they are good, and I am cured with in a day or so. No more indigestion for six or eight months, then another bag of apples. Very cheap , but very effective for me. A buddy of mine told this to his digestive Dr , The doc replied , If I told everybody that ,hen I would be out of business.
Worth a try.
Bill