Study of a Management Strategy of Functional Bowel Disordes Related to Irritable Bowel Syndrome (IBS) With a Mixture of 8 Microbiotic Strains

Inclusion Criteria: * Having IBS symptomatology meeting the Rome IV criteria; * Having a IBS-SSS score ≥150 ; * In a state of general and mental health compatible with participation in the study ; * Agreeing to maintain their lifestyle during the study (same dietary and physical activity habits) ; * Willing to take stool samples; * Able and willing to participate in the research by complying with the protocol procedures, especially regarding the consumption of the study product; * Having electronic tools (computer, tablet...) and an internet connection, allowing him/her to fill out the self-questionnaires of the study online; * Affiliated to a social security system. Exclusion Criteria: * Have a history of hypersensitivity to any of the ingredients of the study product; * Under antibiotic treatment, or having stopped it for less than 14 days; * Under dietary supplementation (prebiotics or probiotics) or having stopped it for less than one month; * Having initiated or modified a background treatment for a comorbidity for less than one month, or planning to initiate it during the study, or planning to interrupt it during the study; * Having a lifestyle incompatible with the study as determined by the investigator; * Women who are pregnant or breastfeeding or who intend to become pregnant within the next 2 months; * Planning to travel extensively during the study period or unable to be contacted in case of emergency; * Psychologically or linguistically unable to understand and sign the informed consent; * Participating in another clinical trial or on an exclusion period from a previous clinical trial; * Under legal protection (guardianship, curatorship) or deprived of their rights following an administrative or judicial decision.