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 the study * 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 exception of hernia repair or appendectomy * Currently diagnosed with any mood- or anxiety-related disorder, major psychiatric illness, or participants with a history of suicidal ideation, or current suicidal ideation, * Regular use of anti-diarrhea medications and laxatives however occasional use is permitted (≤ than once a month); if current use is \> once per month a one month wash out is needed, * Unwilling to avoid the use of antidiarrheal or laxative medication on an "as-needed basis" during the full length of the study, * Pregnant, breast-feeding or planning on becoming pregnant.