Gastritis is an inflammation of the stomach lining, characterized by a burning sensation or dull pain in the upper area of your abdomen. Gastritis symptoms can include indigestion-like pain, bloating, nausea and vomiting. Reducing the amount of acid in your stomach allows the tissues to heal without further irritation. Over-the-counter antacids can be a very effective way to treat mild gastritis and are widely available in liquid and tablet forms. Antacids neutralize stomach acids and provide you with fast relief from gastritis pain. Stronger medications called acid blockers and proton pump inhibitors can be used to treat more severe cases of gastritis. Instead of taking these medications when you feel discomfort, as you would with antacids, acid blockers (cimetidine, rantidine and famotidine) and proton pump inhibitors (omeprazole, lansoprazole and esomeprazole) are taken daily as directed by your physician. These drugs significantly reduce the amount of acid your stomach produces, giving your body time to heal. It is best to avoid beverages containing alcohol and caffeine while you are taking acid-reducing medications, as these substances can further irritate an already sore stomach.