Best Supplements for Improved Intestinal Barrier Function
Ranked by research evidence. Compare 84 supplements across 137 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Low evidence5 studies
Across 3 studies (2 animal, 1 in vitro), all reported beneficial effects on intestinal barrier function, with moderate to large effect sizes. Evidence is limited to non-human populations.
- Low evidence4 studies
Across 4 studies, all reported beneficial moderate-sized effects on intestinal barrier function, but none directly tested Lactobacillus rhamnosus; the studies involved related probiotics or postbiotics. Two out of 4 reported statistically significant findings.
- Low evidence4 studies
Across 4 studies, all 4 reported beneficial effects of Bifidobacterium animalis subsp. lactis BB-12 on intestinal barrier function, with effect sizes ranging from small to moderate (predominantly moderate). The evidence includes in vitro, animal model, and systematic review data, though no study reported statistically significant findings for BB-12 specifically, and the most-studied dose could not be determined due to unreported doses.
- Very lowLactobacillus brevis SBC8803Across 5 studies in the database, all 5 reported beneficial effects of Lactobacillus brevis SBC8803 on improved intestinal barrier function. The predominant effect size was moderate, though none of the studies reported statistically significant findings. Doses and populations varied widely across studies, with two studies using cell-free supernatants in Caco-2 cell models and mouse models, and three being narrative reviews without specific dose or population data.8 beneficial8 studies
- LowSaccharomyces cerevisiaeAcross 3 studies (2 animal, 1 in vitro), all reported beneficial effects on intestinal barrier function, with moderate to large effect sizes. Evidence is limited to non-human populations.5 beneficial5 studies
- Very lowLactobacillus amylovorusAcross 3 studies, all reported **beneficial** effects of *Lactobacillus amylovorus* on intestinal barrier function, with a **moderate** predominant effect size. The limited evidence (2 statistically significant findings) suggests improvements in tight junction gene expression, villus height, and mucosal immune markers, primarily in neonatal or gestating pig models. No clear dose or population segment could be identified due to incomplete reporting.5 beneficial5 studies
- LowLactobacillus rhamnosusAcross 4 studies, all reported beneficial moderate-sized effects on intestinal barrier function, but none directly tested Lactobacillus rhamnosus; the studies involved related probiotics or postbiotics. Two out of 4 reported statistically significant findings.4 beneficial4 studies
- LowBifidobacterium animalis subsp. lactis BB-12Across 4 studies, all 4 reported beneficial effects of Bifidobacterium animalis subsp. lactis BB-12 on intestinal barrier function, with effect sizes ranging from small to moderate (predominantly moderate). The evidence includes in vitro, animal model, and systematic review data, though no study reported statistically significant findings for BB-12 specifically, and the most-studied dose could not be determined due to unreported doses.4 beneficial4 studies