Across 3 studies, all reported beneficial effects on gut microbiota composition, with two showing moderate effect sizes and one showing a small effect. No consistent dose range, study duration, or form was reported across studies. The evidence base is small and preliminary.
Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). None of the studies reported statistical significance, and all were review or animal-model studies, limiting applicability to human supplementation.
consuming Lactobacillus rhamnosus lysate powder ... improved gut microbiota composition
how the new approach could be involved in the gut microbiome modulation to prevent and treat gut dysbiosis
CDEE modulated gut microbiota that altered by HFD through an increased abundance of Lactobacillus reuteri compared with the HFD group
pretreatment with BL improved CR-induced gut microbiota dysbiosis by reducing the content of Proteobacteria, while increasing the content of Lactobacillus.