This observation study is a large-scale, prospective, and multi-organ observation study to observe the improvement effect of the self-evaluation results (PRO) of erosive gastroesophageal reflux disease at least 4 to 8 weeks after administration of Fexuclue Tab.~Subjects who met the inclusion/exclusion criteria will administer Fexuclue Tablet once a day for four weeks after registration, regardless of their meals. If esophagitis is not treated or symptoms continue after 4 weeks of administration, the subject will continue to administer Fexuclue Tablet for 4 more weeks (maximum administration period: 8 weeks).
This observation study is a large-scale, prospective, and multi-organ observation study to observe the improvement effect of the self-evaluation results (PRO) of erosive gastroesophageal reflux disease at least 4 to 8 weeks after administration of Fexuclue Tab.