I have a strong tendency towards gastritis...I've had it on and off--mostly as a result of medication that is irritating. Most antibiotics cause it to come on. When I had gastritis it always created an increase in GERD symptoms, burning my esophagus and flaring up my asthma.
After months of babying my stomach, the gastritis will heal, but it is a long term process. Once it's healed, I can go back to ordinary eating and drinking. I am only able to tolerate amoxicillin, and now I've found that z-pac is okay on my stomach. My doctor is aware of my stomach sensitivity, and is very careful. When things are bad, I eliminate any medication and supplements that not absolutely necessary. He has prescribed Carafate, which coats my stomach...I put the tablet in a little medicine cup, and add a bit of water, to make a slurry. It helps to protect the stomach lining, so it can heal. It's a very old an benign drug...if you haven't tried it, you might ask your doctor about it.
I had the Nissen Fundoplication procedure at the end of February. While I've had some gastritis flare-ups due to prednosone that I had to take to calm down asthma, my GERD has not been affected, because the wrap keeps the acid in my stomach where it belongs.
Yes, I think gastritis goes away, but your sensitive stomach remains--ready to be re-irritated by whatever sets you off.
If you eat very carefully (no alcohol, coffee, spicy foods, etc.) you will get your stomach back to normal. If your experience is like mine, in between attacks, you can eat and drink normally. I've actually been hospitalized by an uncontrolled gastritis attack that flared up my asthma. Unfortunately, there is no magic pill that clears up gastritis quickly. It requires lots of patience.
I still take protonix 40mg. My family doc reduced my dosage from two to once a day, but isn't ready to cut it out altogether, because of my reactive stomach. I'm just glad that my stomach isn't setting off my asthma any more.
Good luck to you!