These mean too much acid, so I avoid all “acidic” foods & drinks.
Even things like fizzy drinks, strawberries and more than one tomato, but starting with coffee, alcohol, everything sour, spicy things, onion-like (chives, garlic, too), and minty, incl. even minimal seasoning/dressings, oily, fried and hot, too. It might help to raise the upper part of your bed. https://www.wikihow.com/Cure-Hyperacidity-Naturally
If I still get it, I get rid of it using a herb preparation called Gastritol or eating a small raw ungreen potato, chewing and insalivating it. Iberogast/STW5 is commonly used by people I know who don’t have a problem with peppermint. I don’t use antacids, because almost all meds have adverse effects on me. Eating an apple or drinking ginger tea doesn’t help me. One type of probiotic bacteria didn’t help either, haven’t tried basil or chewing cinnamon. I also have IBS. What works best there is psyllium with little water against the diarrhea.
Since I’ve realized I am dry all over (skin, mouth, sometimes eyes, throat, peeing a lot), I think that it’s not that I have too much acid, but rather too little water. This article explains how:
https://www.joyfulbelly.com/Ayurveda/article/How-Dryness-Causes-Burning-Sensations-Stomach-Ulcers/6393 It says eat more healthy fats, which I do (have too), but also more sweet things (which I’m not allowed to because of my blood fats), avoid celery, parsley & Cumin-Coriander-Fennel-Tea, because they are diuretic (I drink only soy drinks, bc pure water & teas act diuretic; oat and rice drinks give me heartburn).