4. Participants categorized as 'high bloaters' as defined by an average bloating score ≥ 5 during the run-in period assessed at baseline by question 3 of the Modified Daily Abdominal Discomfort, Gas, and Bloating Questionnaire, AND/OR, participants categorized as 'high frequency bloaters' as defined by greater than 7 days of high bloating (defined above) during the run-in period.