Welcome to HealthcareMagic forum.
If you meant gastritis
with symptoms of belching
and discomfort in chest, etc, you must quit smoking
and avoid spicy food. Make sure you eat on time and never skip meals, avoid coffee, tea and aerated drinks, drink lot of fluids , juices, and good amount of water.Reduce stress
as stress increases the gas issue . Also make sure that you have a balanced diet with good amount of vegetables, and get some good physical activity daily , deep breathing and mediation also helps in your case
If this does not work, you could go for T.OMEZ 20 mg half hour before meals , this will provide some relief