1. Treatment of Gastroesophageal Reflux Disease (GERD) - Healing of Erosive Esophagitis - Long-term maintenance therapy to prevent recurrence of reflux esophagitis - Symptomatic treatment of gastroesophageal reflux disease without esophagitis 2. Combination antibiotic therapy to eradicate Helicobacter pylori - Treatment of Helicobacter pylori positive duodenal ulcer - Prevention of recurrence of Helicobacter pylori positive peptic ulcer 3. Short-term treatment of NSAID-associated upper gastrointestinal complaints (pain, discomfort, burning) 4. For patients with continuous NSAID therapy - Treatment and prevention of NSAID-associated gastric ulcer 5. Treatment of Zollinger-Ellison Syndrome 6. Maintenance therapy after induction of rebleeding prevention due to gastric or duodenal ulcer by intravenous injection

1. Adults 1) Gastroesophageal reflux disease (GERD) - Treatment of erosive reflux esophagitis: 40mg is administered once a day for 4 weeks. If the esophagitis is untreated or the symptoms persist, take another 4 weeks. - Long-term maintenance therapy to prevent recurrence of esophagitis patients: 20mg once a day - Symptomatic treatment of gastroesophageal reflux without esophagitis: · 20 mg once a day. If symptoms are not controlled even after 4 weeks, additional treatment is required. · If symptoms are relieved, subsequent symptoms are controlled by administering 20mg once a day.