Clinical Research Directory

Inclusion Criteria: 1. Patients with Functional dyspepsia/ postprandial distress syndrome as per Rome IV diagnostic criteria * Symptom characteristics of dyspepsia (upper gastrointestinal symptoms occurring in the last 6 months and meal related (PDS)) * Negative endoscopy (maximum 12 months old) 2. Patients must provide witnessed written informed consent prior to any study procedures being performed 3. Patients aged between 18 and 70 years inclusive 4. Male or female patients Exclusion Criteria: 1. Patients with any condition which, in the opinion of the investigator, makes the patient unsuitable for entry into the study 2. Patients with any major psychiatric disorders (including those with a major psychosomatic element to their gastrointestinal disease), depression, alcohol or substance abuse in the last 2 years 3. Patients presenting with predominant symptoms of irritable bowel syndrome (IBS) and of gastro-oesophageal reflux disease (GERD) 4. Patients who changed their diet over the last 3 months or have previously tried the low FODMAP diet are excluded from the study. 5. Females who are pregnant or lactating are excluded from the study.