You need to follow a healthy diet. Avoid spicy foods, oily foods, outside junk foods, sweets and sugars as much as possible. Have 4-5 short meals per day, instead of three big meals. Also drink plenty of water in between meals and little water during meals. You can take pantoprazole plus domperidone once in the morning half hour before your breakfast for one week. Sometimes stress can also trigger gastritis. So try relaxation methods like yoga or meditation. Also do not starve for too long. And since you are getting black stools, there could be some internal bleeding.consult a general surgeon for further evaluation.

As you are suffering since long period and have already been using the medicines, I would suggest you to consult a gastroenterologist at guntur or Vijayawada and get a Gastroscopy done to identify the cause for your condition. For further guidance please come back to us