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 on gastrointestinal symptoms, but effect sizes were mixed (two small and one moderate). None of the studies reported statistically significant findings. Evidence is limited to a small number of reviews and a systematic review, with no data on specific doses or forms. The most studied population is athletes, but general adult humans also appear.
- Low evidence3 studies
Across 3 studies, all reported beneficial effects on gastrointestinal symptoms, predominantly with moderate effect size. The highest-quality study, a systematic review in individuals with autism spectrum disorder, found a small beneficial effect. Limited evidence exists for specific populations such as those with ASD and oncological patients; no consistent dose or form was reported.
- LowEnterococcus faecium R0026Across 3 studies, all reported beneficial effects on gastrointestinal symptoms, but effect sizes were mixed (two small and one moderate). None of the studies reported statistically significant findings. Evidence is limited to a small number of reviews and a systematic review, with no data on specific doses or forms. The most studied population is athletes, but general adult humans also appear.3 beneficial3 studies
- LowLactobacillus rhamnosusAcross 3 studies, all reported beneficial effects on gastrointestinal symptoms, predominantly with moderate effect size. The highest-quality study, a systematic review in individuals with autism spectrum disorder, found a small beneficial effect. Limited evidence exists for specific populations such as those with ASD and oncological patients; no consistent dose or form was reported.3 beneficial3 studies