Study to Evaluate the Efficacy and Safety of DWP14012 in Patients With Non Erosive Reflux Disease

Exclusion Criteria

• •1. Subjects who have Barrett's esophagus, gastroesophageal varices, esophageal stenosis, ulcer stenosis, active gastric ulcer, gastrointestinal bleeding or malignant tumor confirmed by endoscopy
• •2. Subjects who have erosive esophagitis, acute upper gastrointestinal bleeding, gastric ulcers or duodenal ulcers within 2 months before Visit 1
• •3. Subjects diagnosed with functional dyspepsia, primary esophageal motility disorder, IBS, IBD in the last 3 months
• •4. Subjects who have a history of gastric acid suppression surgery or gastroesophageal surgery
• •5. Subjects with Zollinger-Ellison syndrome
• •6. Subjects with eosinophilic esophagitis
• •7. Subjects with clinically significant liver, kidney, nervous system, respiratory, endocrine, hematologic, cardiovascular, urinary system disease .