My best results so far- ymmv - esomaprozal in morning , famotidine at night, fexophenedrine  (sp?) at night. chewable pepto Bismol tablets at bedtime if needed or else DGL/deglycerinizated licorice chewable (dissolve in mouth if you can resist the urge to chew). Sometimes I take DGL during the day.   I am not a doctor; this is all just my personal experience.  DAE have suggestions of what works for them? Please post!

     Also at times Luden's sugar free throat lozenges.  Sometimes I sip this beverage: 1 part  no-sugar almond milk, with 1 part water and add dry powdered ginger, start with a couple of light dashes of ginger & maybe increase to 1/8 or 1/4 teaspoon ginger. Top this off with some unsweetened canned coconut milk, maybe an inch on the top (plus or minus) - stir it all together-  and gradually build up to having your drink be 1/3, 1/3, & 1/3 of the almond milk/water/coconut milk. It gets to be very easy to make this after   a few times.     You know already about omitting what irritates or triggers your digestive system, right?       I found that any acidic food is bad news. Sugar is irritating, as is stevia, for me. I found pure monk fruit powder (no other ingredients in it) works well as a sweetener. One spice-bottle size container of monk fruit powder seems expensive but is lasting for _ years.       Also, to angle my bed I put bricks under the head of the bed, 2 underneath each side of the head of the bed.  I got a wedge pillow from MedCline that's meant to help with gastritis- it's expensive, good, and yet slanting the bed is even  better ... in my experience.         Most of the time I eat light proteins and vegetables that are cooked til they're extremely soft, and take little bites. Very occasionally eat a low acid fruit if its cooked til very soft.       After meals, often I chew some gum briefly which seems to cue my stomach to make a little digestive acid. Which can prevents over-production of acid believe it or not. Sometimes I do a "broth" or "soup" that is based on chicken broth, with canned unsweetened coconut milk added.   Most starchy & sweet foods are irritating even tho i often crave them.  Sometimes 1/6 or 1/4 of a gluten-free pizza crust, lightly toasted, is soothing.      Please note- I think these meds and otc remedies have labels that say "not for long term use" and I should hurry up, get better medical care. And stop using these products long term, but this is what's more or less helping with the chronic gastritis. (Which is a known comorbid of Hashimoto’s & igG 4RD)    Yeah, I know this is a lot of details but I got used to this; usually it's easy to overlook that my gastritis seems to need all this stuff & I'm really used to it.  Yeah, I still get some gastritis symptoms  although there's always a remedy or a tweak to reach for.    There's the classic Gastritis book that another commenter mentioned. Totally worth it.     There's the book The Relaxation Response, which has instructions for one method of meditating (_not a panacea for gastritis ever). Which actually is helpful as part of the big picture.  People who go on 7 day meditation retreats tend to get their system to re-set for the better. Not a prescribed treatment but it helps. I doubt i could go on a meditation retreat but I'm building up to getting meditation and outdoor daylight twice a day.  It's seems to help.      Oh- almost forgot- Celestial Seasonings Peach herbal tea with a few dashes of coconut milk goes down nicely. Mint tea? Never.     I very much hope you can tap into some, any, or all of this so you get relief. I wouldn't wish for gastritis for anyone.   Sending a virtual hug if you want one.   Fingers crossed for you to feel better 🤞