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evidence · mechanism · dose
Supplements/Compound

Inulin (Prebiotic Fiber)

Fructan prebiotic — selectively feeds bifidobacteria.

Microbiome SupportConstipationGut Health

Overview

Fructan prebiotic — selectively feeds bifidobacteria.

Natural sources
    Common forms

      Mechanism of action

      Fermented to SCFAs by colonic bacteria; bifidogenic.

      Pathways

        Effects on the body

        Organ system effects

        Evidence-based benefits

        Increases bifidobacteria abundance

        Strong evidence

        Potential side effects

        Common
        • · Gas
        • · Bloating
        • · Worsens IBS
        Rare
          Serious

            Drug interactions

            No notable interactions reported.

            Supplement interactions

            Pairs well with

            None listed.

            Avoid combining with

            No specific avoidances listed.

            Dosing & bioavailability

            Typical dose
            5–10 g/d
            With food?
            Optional

            Where to buy

            Affiliate-style search links to reputable retailers. We don't endorse specific brands — verify third-party testing (USP, NSF, Informed Sport) before purchase.

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            Thorne
            Practitioner-grade · NSF tested

            Scientific evidence (8)

            Meta-analysisEur J Clin Nutr · 2009

            Inulin-type fructans and Bifidobacterium

            Meyer D, Stasse-Wolthuis M

            Meta-analysis of inulin RCTs.

            Key findings

            Selective increase in Bifidobacterium at 5–20 g/d.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Inulin (Prebiotic Fiber) — Increases bifidobacteria abundance

            Live PubMed search

            Live results for "Inulin (Prebiotic Fiber) Increases bifidobacteria abundance" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Inulin (Prebiotic Fiber) and "Increases bifidobacteria abundance". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Inulin (Prebiotic Fiber) — randomized controlled trial

            Live PubMed search

            Live results for "Inulin (Prebiotic Fiber) randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Inulin (Prebiotic Fiber) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Inulin (Prebiotic Fiber) — meta-analysis

            Live PubMed search

            Live results for "Inulin (Prebiotic Fiber) meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Inulin (Prebiotic Fiber) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Inulin (Prebiotic Fiber) — pharmacokinetics

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            Live results for "Inulin (Prebiotic Fiber) pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Inulin (Prebiotic Fiber) and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Inulin (Prebiotic Fiber) — safety adverse events

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            Live results for "Inulin (Prebiotic Fiber) safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

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            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Inulin (Prebiotic Fiber) — dose response

            Live PubMed search

            Live results for "Inulin (Prebiotic Fiber) dose response" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Inulin (Prebiotic Fiber) and "dose response". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewGoogle Scholar · 1970

            Google Scholar: Inulin (Prebiotic Fiber) — clinical evidence

            Live Scholar search

            Cross-database citation index for Inulin (Prebiotic Fiber) as it relates to "clinical evidence".

            Key findings

            Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

            Open study
            Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.