Inulin (Prebiotic Fiber)
Commonly used for
Metabolic HealthNutritionConstipation
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What is it? / Overview
Inulin is a prebiotic fiber that feeds beneficial gut bacteria and improves bowel regularity. It can also modestly improve calcium absorption and support overall gut health.
How is it used? / Administration
Form: Chicory root inulin
Typical dose studied: 3–10 g/day, increased gradually
Timing: With meals
Start with 2–3 g/day to reduce bloating. IBS patients should trial cautiously.
What does it pair with?
Pairs well with:
Can support certain probiotic strains, but works fine as fiber on its own — Forms a "synbiotic" pairing with some probiotic strains, but a prebiotic doesn't require a probiotic supplement to be useful.
How well does it work? / Evidence
✓ Well-established
Who should avoid it?
Avoid with: IBS / Irritable bowel syndrome
Interacts with: Separate from medications if significant GI symptoms occur
Already taking it? Increase slowly to improve tolerance.
Research & references
Gibson GR et al. (2017). Expert consensus document: The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of prebiotics. Nat Rev Gastroenterol Hepatol. ISAPP Prebiotic Consensus. Slavin J. (2013). Fiber and prebiotics: mechanisms and health benefits. Nutrients. Wang L et al. (2019). Inulin-type fructans supplementation improves glycemic control for the prediabetes and type 2 diabetes populations: results from a GRADE-assessed systematic review and dose-response meta-analysis of 33 randomized controlled trials. J Transl Med.
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