This study is testing a medicine called **BLI5100** to see if it helps heal Erosive Esophagitis (**EE**), which is when the food pipe gets damaged by stomach acid. Some people will take BLI5100, while others will take a different medicine called a **PPI** (proton pump inhibitor) for comparison. The study has two parts: a healing phase for up to 8 weeks and a maintenance phase for 24 weeks. To join, you need to be 18 or older, have had symptoms like heartburn recently, and agree to follow study rules. You can't join if you have other serious health issues or are on certain medications.

• Participants need to visit the clinic for check-ups and tests.
• The study lasts up to 32 weeks in total.
• Some people might get paid for joining, but there are risks like side effects.