Efficacy and Safety of a Probiotic Formulation in Adults With Irritable Bowel Syndrome With Diarrhea (IBS-D)

Inclusion Criteria:

• Experiencing symptoms of IBS-D
• Having a diagnosis of IBS-D based on Rome IV criteria
• Participants with symptom onset at least 6 months before diagnosis
• Having a normal colonoscopy result in their medical file

Exclusion Criteria:

• A history of inflammatory or immune-mediated gastrointestinal diseases
• Diagnosed with a co-existing organic gastrointestinal disease which can affect thestudy
• Currently undergoing a treatment for other severe conditions such as coronary disease,neurological disorder, kidney or liver disease,
• Currently diagnosed with an eating disorder,
• Having undergone any abdominal surgery including cholecystectomy, with the exceptionof hernia repair or appendectomy
• Currently diagnosed with any mood- or anxiety-related disorder, major psychiatricillness, or participants with a history of suicidal ideation, or current suicidalideation,
• Regular use of anti-diarrhea medications and laxatives however occasional use ispermitted (≤ than once a month); if current use is > once per month a one month washout is needed,
• Unwilling to avoid the use of antidiarrheal or laxative medication on an "as-neededbasis" during the full length of the study,
• Pregnant, breast-feeding or planning on becoming pregnant.