Mr.Y You have already consulted a gastro-enterologist and based on his prescription you seem to have Gastritis with GERD. Majority of GERD patients can be managed by long term medications and it's only a minority which requires anti reflux surgery. A few life style modifications are required in the management GERD Avoid: alcohol, cigarette smoking, binge eating, oily-spicy food,immediately lying down after a meal (preferably lying down after 2 hrs), forced belching...just to name a few. Try: eating your meals on time, dinner by 8.30pm, exercise, get adequate sleep. These life style modifications along with medications work for more than  80% of patients. Regards.