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Head-to-head evidence comparison — which supplement is right for you?
L. rhamnosus GG vs Psyllium Husk: Psyllium Husk has the stronger overall evidence (8.5 vs 6/10); they're alternatives for improve digestion — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Psyllium Husk wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
Top outcomes
Verdict
Likely helps
15 of 20 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both L. rhamnosus GG and Psyllium Husk have evidence — compare verdict strength side-by-side.
10-20 billion CFU (1-2 x 10^10) daily; 10 billion CFU/day is the effective floor
any
Capsule standardized to ATCC 53103
5-10g daily
Before meals, With plenty of water
Whole husk powder
During the antibiotic course
During hospital stay
n/a
n/a
2-3 days
4-8 weeks
Immediate
First 1-2 weeks
Lactobacillus rhamnosus GG versus Placebo for Acute Gastroenteritis in Children.
N Engl J Med (2018) · Rct · n=971
Primary outcome (modified Vesikari score >=9 within 14 days): 11.8% with LGG vs 12.6% placebo; RR 0.96 (0.68-1.35), P=0.83
Systematic review with meta-analysis: Lactobacillus rhamnosus GG in the prevention of antibiotic-associated diarrhoea in children and adults.
Aliment Pharmacol Ther (2015) · Meta analysis
Antibiotic-associated diarrhea fell from 22.4% to 12.3%; RR 0.49 (0.29-0.83) pooled across 11 RCTs, n=1,308 (12 RCTs, n=1,499 included overall)
Probiotics for treating acute infectious diarrhoea.
Cochrane Database Syst Rev (2020) · Meta analysis
In studies at low risk of bias, no difference in diarrhea lasting >=48 hours (RR 1.00, 0.91-1.09; moderate certainty)
Galactomannans are the most effective soluble dietary fibers in type 2 diabetes: a systematic review and network meta-analysis
The American journal of clinical nutrition (2023) · Meta analysis · n=2685
Galactomannans had the highest effect on reducing the levels of HbA1c (SUCRA: 92.33%) and fasting blood glucose (SUCRA: 85.92%).
The Effect of Fiber Supplementation on Chronic Constipation in Adults: An Updated Systematic Review and Meta-Analysis of Randomized Controlled Trials
The American journal of clinical nutrition (2022) · Meta analysis · n=1251
Overall, 311 of 473 (66%) participants responded to fiber treatment and 134 of 329 (41%) responded to control treatment [RR: 1.48 (95% CI: 1.17, 1.88; P = 0.001); I2 = 57% (P = 0.007)], with psyllium and pectin having significant effects.
The effect of psyllium on fasting blood sugar, HbA1c, HOMA IR, and insulin control: a GRADE-assessed systematic review and meta-analysis
BMC Endocrine Disorders (2024) · Meta analysis · n=962
FBS reduced by 6.89 mg/dL
Based on multiple meta-analyses showing 8.55 mg/dL LDL reduction and 0.278 mmol/L reduction. Effect appears dose-dependent with plateau around 10g. Must take with adequate water.
AI-estimated from published studies. Interpret as directional guidance.
Psyllium Husk has a higher evidence score (8.5/10 vs 6/10) and wins in 2 of 3 categories.
Both L. rhamnosus GG and Psyllium Husk score equally (72) for improve digestion.
No known interactions between L. rhamnosus GG and Psyllium Husk have been documented in our database. However, always consult a healthcare provider before combining supplements.
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The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.