Safety to Evaluate the Efficacy and Safety of HIP1601 in Patients With Non Erosive Reflux Disease

Inclusion Criteria: * 19≤ age ≤ 75 * Patients who were not observed mucosal break('not present') according to the LA classification(LA grade) on the EGDEsophago-Gastro-Duodenoscopy * Patients who had experienced major symptom within 3 months Patients experienced heartburn or acid regurgitation within 7 days of screening day * Patients who had experienced major symptom within 7 days before randomization. Entry into study also required that patients had experienced at least mild symptoms on at least 2 days/week or at least moderate symptoms on at least 1 day/week based on RDQ * Patients understood the consents and purpose of this trial and signed consent form Exclusion Criteria: * Patients who have erosive GERD, Barrett's esophagus(other significant dysplasia of esophagus), gastroesophageal varicose veins, active peptic ulcer, gastrointestinal bleeding or malignant GI tumor confirmed by endoscopy * Patients who have a history of gastric or gastroesophageal surgery * Patients who have Zollinger-Ellison syndrome, eosinophilic esophagitis, primary esophageal motility disorder, acute upper gastrointestinal bleeding, Functional dyspepsia, IBS, IBD within 3 months before Visit 1 * Patients with clinically significant liver, kidney, nervous system, respiratory, endocrine, hematologic, cardiovascular, urinary system disease. * Patients Has a severe liver disorder(AST or ALT level exceeds 3 times more than normal upper range at Visit 1) * Has a clinically significant renal failure(MD…