Perceived Knowledge of the Use of Probiotics in Irritable Bowel Syndrome: A Cross-Sectional Survey

Background and Objectives: This study aimed to characterize physicians’ knowledge and practice patterns regarding the use of probiotics in the management of irritable bowel syndrome (IBS). By examining clinical experiences and barriers to adoption, this research sought to identify critical gaps in practice and establish a foundation for evidence-based improvements in patient care. Materials and Methods: The survey was conducted in accordance with the CROSS (Consensus-based Checklist for Reporting of Survey Studies) guidelines. Attendees of a medical congress, specifically general practitioners, gastroenterologists, surgeons, and internists with an interest in the clinical significance and therapeutic modulation of the human microbiome, were invited to participate. Participants completed a 38-item, paper-based questionnaire. The instrument assessed respondents’ self-perceived knowledge of probiotics, their understanding of probiotic definitions and specific strains, and their current clinical practice patterns—particularly regarding the management of irritable bowel syndrome (IBS). Additionally, the survey explored information sources, the frequency of self-prescription, and the perceived need for further education, with a specific focus on safety profiles and clinical concerns. Results: Of the 70 invited attendees, 68 completed the survey, yielding a response rate of 97.1%. The respondent cohort included 40 general practitioners (GPs), 20 gastroenterologists (GEs), four surgeons (SSs), and four internists (SIMs). More than half of the respondents were female (n = 37, 54.4%), with a median age of 43 years (range: 28–70). Exactly half of the respondents (n = 34, 50.0%) agreed that probiotics always have a role in the management of irritable bowel syndrome (IBS); however, only 44.1% (n = 30) reported familiarity with the relevant scientific literature on probiotics. Furthermore, respondents more frequently recognized bacterial species associated with single-strain probiotic formulations compared to those in multi-strain mixtures. The primary concern regarding the administration of probiotics for IBS was this lack of familiarity with the scientific literature, cited by 23.5% of respondents. Notably, 100% of the surveyed cohort expressed a need for further education on the topic. Conclusions: The emergence of scientific and clinical evidence results in a clinical practice characterized by high prescribing habits, despite the lack of formal approval. These findings highlight evidence showing the effectiveness of certain probiotic strains in managing IBS symptoms, suggesting the need for standardized guidelines. Given the demonstrated need for further education among the surveyed cohort, integrating probiotic-specific training into both undergraduate medical curricula and continuing professional development programs could significantly enhance the clinical knowledge and awareness of both current and future practitioners.