What is the treatment for mild gastritis ?

Simple: If not exacerbated by alcohol intake or irritating meds, usually Pepcid (famotidine) (10 or 20mg, available over the counter) twice a day until it settles, then once daily for one to a few weeks. If it comes back or breaks through, you should have your Dr be sure you don't need a more advanced medicine or Gastroententerology consult.

Hi: if its symptomatic then use H2 blocker like Pepcid, ranitidine or PPI - like Prilosec, protonix, nexium, (esomeprazole) Prevacid etc. If no symptoms then just do not do anything - avoid - smoking, alcohol, any NSADIS - like advil, Motrin or aleve.

Acid blocker: Avoid tobacco, caffeine, ibuprofen, aspirin, alcohol, acidic food, carbonation, and spearmint. They all increase reflux of acid. You also want to lower the acid in your stomach for at least 3 months. Generally if it is mild you can use Prilosec 20mg once or twice a day..