Best Supplements for Improved Gastrointestinal Symptoms
Ranked by research evidence. Compare 51 supplements across 66 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Low evidence3 studies
Across 3 studies, all reported beneficial effects of Lactobacillus rhamnosus on gastrointestinal symptoms, with effect sizes ranging from small to moderate. The largest study (a systematic review in an autism spectrum disorder population, n=1769) showed a small beneficial effect, while two smaller studies (including a clinical trial in an oncological cohort) showed moderate effects. Evidence is preliminary and limited by the small number of studies and lack of statistically significant findings.
- Very low evidence3 studies
Across 3 studies, all reported beneficial effects on gastrointestinal symptoms, with effect sizes ranging from small to moderate. The evidence is limited to systematic reviews and narrative reviews in athletic and general adult populations, with no dose or duration data available. The predominant effect size is mixed (small to moderate) across studies.
- LowLactobacillus rhamnosusAcross 3 studies, all reported beneficial effects of Lactobacillus rhamnosus on gastrointestinal symptoms, with effect sizes ranging from small to moderate. The largest study (a systematic review in an autism spectrum disorder population, n=1769) showed a small beneficial effect, while two smaller studies (including a clinical trial in an oncological cohort) showed moderate effects. Evidence is preliminary and limited by the small number of studies and lack of statistically significant findings.3 beneficial3 studies
- Very lowEnterococcus faecium R0026Across 3 studies, all reported beneficial effects on gastrointestinal symptoms, with effect sizes ranging from small to moderate. The evidence is limited to systematic reviews and narrative reviews in athletic and general adult populations, with no dose or duration data available. The predominant effect size is mixed (small to moderate) across studies.3 beneficial3 studies