Inclusion Criteria:  Outpatients Diagnosis of FD (including postprandial distress syndrome [PDS] with or without epigastric pain syndrome [EPS]) (Rome Ⅲ criteria) Diagnosis of IBS-C (Rome Ⅲ criteria)  Exclusion Criteria:  Helicobacter Pylori infection GI symptoms caused by taking non-steroidal anti-inflammatory drugs or other agents Pregnancy