The study is testing a medicine called pantoprazole, which helps heal the esophagus, the tube that carries food from your mouth to your stomach. This medicine is a Proton Pump Inhibitor (PPI), which means it reduces the amount of acid in the stomach. The study is for kids between 1 and 17 years old who have already healed their esophagus with treatment. The researchers want to see if two different doses of pantoprazole (a full dose and a half dose) are safe and work well for keeping the esophagus healed.

• Participants must be willing to come to all study visits and follow the study rules.
• Participants need to record how they feel in an electronic diary (eDiary).
• Some health conditions and medicines might not allow someone to join the study.

Children with certain health problems, like severe allergies to PPIs or other serious medical conditions, cannot join. The study might not be suitable for children who recently had other treatments or medicines that could interfere with the study. Kids who are part of this study must be able to follow all visit schedules and take their medicine as instructed.