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If you need a pain reliever for gastritis, ask your doctor to prescribe a nonirritating alternative to aspirin or other nonsteroidal anti-inflammatory drug (NSAID). For gastritis caused by H. pylon, the doctor may prescribe antibiotics. Antacids can sometimes soothe the irritation until the inflammation subsides.

Consume regular meals with a balance of starchy foods, fruits, vegetables, and low-fat protein.
Avoid fatty foods, tomato-based products, chocolate, alcohol, caffeine, and peppermint, which can cause acid reflux.  Spicy foods if they irritate you. Frequent use of aspirin or other arthritis pain relievers.