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Head-to-head evidence comparison — which supplement is right for you?
Inulin vs Psyllium Husk: they're closely matched on evidence (6 vs 8.5/10); 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.
Inulin and Psyllium Husk are closely matched across evidence, studies, and safety.
Verdict
Likely helps
7 of 8 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
6 of 6 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (2)
Outcomes where both Inulin and Psyllium Husk have evidence — compare verdict strength side-by-side.
5-15g daily
With meals or in beverages, Can be taken any time of day, Divide into multiple doses if taking higher amounts
Chicory root inulin powder
5-10g daily
Before meals, With plenty of water
Whole husk powder
2-4 weeks
1-2 weeks
2-4 weeks
First 1-2 weeks
2-3 days
4-8 weeks
Immediate
First 1-2 weeks
The effects of inulin-type fructans on cardiovascular disease risk factors: systematic review and meta-analysis of randomized controlled trials
The American journal of clinical nutrition (2024) · Meta analysis · n=2518
Meta-analysis of 55 RCTs in 2,518 adults given inulin-type fructans for at least 2 weeks.
The effects of chicory inulin-type fructans supplementation on weight management outcomes: systematic review, meta-analysis, and meta-regression of randomized controlled trials
The American journal of clinical nutrition (2024) · Meta analysis · n=1184
Chicory ITF significantly reduced body weight [mean difference (MD): -0.97 kg; 95% CI: -1.34, -0.59); n = 1184] compared with placebo.
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%).
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
19 RCTs, 962 participants: FBS reduced by 6.89 mg/dL (95% CI: -10.62, -3.16).
Both Inulin and Psyllium Husk are closely matched — the best choice depends on your specific health goals.
For improve digestion, Inulin has a higher relevance score (85 vs 72).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
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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.