Effectiveness of probiotics for antipsychotic-induced functional bowel disorders: A single-center retrospective observational study
Abstract Background Probiotics have the potential to improve functional constipation, however, evidence is lacking regarding its recommendation related to gut microbiota. Constipation is highly prevalent and a serious side-effect in antipsychotic treatment. This study was to investigate the effects of probiotics supplementation on defecation in psychiatry.Methods Subjects consisted of 31 male and 37 female inpatients who were co-administrated either of two probiotics: BIO-THREE or BIOFERMIN tablets. The medications that affect bowel movement including gastrointestinal drugs and antipsychotics in addition to their levels of chlorpromazine equivalent (CPeq) doses were compared between the two groups. Intestinal function was evaluated at baseline and one and two months using Bristol stool form scale. Sequential change of the three indices: average, constipation and diarrhea levels were compared within the group and analyzed to see any significant correlation against the CPeq levels. Results There were no significant differences in the medical treatment between the groups. In both groups, the average and constipation levels increased, and the diarrhea levels decreased at two months from baseline; in particular, the constipation levels were significantly increased at two months from baseline in the BIO-THREE group (-9.6±1.0 vs -6.5±0.9, mean±se). In the BIO-THREE group, only the diarrhea levels were significantly negatively correlated with the CPeq levels at two months (r= -0.341), while no such correlations were found in the BIOFERMIN group.Conclusions Probiotics supplementation may improve stool consistency, especially severe constipation and ameliorate diarrhea depended on antipsychotic dosage in psychiatric setting.