Hi, Excess gas in stomach can be caused by following factors like swallowing of gas during speaking/ eating, diseases like GERD, gastric ulcer disease, gastro paresis. He should avoid taking spicy and fast food, eat slowly and chewing the food completely. Alcohol and smoking should also be avoided. Ask him to do exercise and yoga regularly ,reduce some food items from diet like bean, cabbage, onion etc. An endoscopy and 24 hour pH monitoring should be done to rule out the cause. Consult a surgeon for further treatment according to cause. Continue taking pantoprazole for at least 1 week and sucralfate suspension. Good luck, bye.