This study focuses on individuals who have healed erosive esophagitis, which is an inflammation and damage to the lining of the esophagus caused by gastroesophageal reflux disease, a condition where stomach acid flows back up into the food pipe. The purpose of the study is to evaluate the effectiveness and safety of a new medication called linaprazan glurate compared to an existing medication called lansoprazole in keeping the esophagus healed.

Participants in the study will be assigned to receive either linaprazan glurate or lansoprazole. Because the study uses a double-dummy method to ensure that neither the researchers nor the participants know which medication is being taken, some individuals will receive combinations of the active medication and a placebo. The treatment involves taking tablets by oral use over a period of time to see how well the esophagus remains healed and to monitor any potential side effects.