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Supplements/Compound

Inulin (Prebiotic Fiber)

Fructan prebiotic — selectively feeds bifidobacteria.

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Overview

Fructan prebiotic — selectively feeds bifidobacteria.

Natural sources
  • Endogenously produced or biosynthesized molecule
  • Standardized pharmaceutical- or food-grade supplement
  • Combined with cofactors that improve absorption or activity
Common forms
  • Capsule or softgel
  • Powder
  • Sublingual or buccal
  • Liposomal liquid

Mechanism of action

Fermented to SCFAs by colonic bacteria; bifidogenic.

Pathways
  • · Fermented to SCFAs by colonic bacteria
  • · bifidogenic

Effects on the body

Increases
bifidobacteria abundance

Organ system effects

Evidence-based benefits

Increases bifidobacteria abundance

Strong evidence

Potential side effects

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

      Drug interactions

      Prescription medications (general)
      Always disclose Inulin (Prebiotic Fiber) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.
      minor

      Supplement interactions

      Pairs well with
      • A high-quality multivitamin
        Covers micronutrient cofactors that support most supplement pathways.
      • Omega-3 (EPA/DHA)
        Foundational anti-inflammatory support that complements most regimens.
      Avoid combining with

      No specific avoidances listed.

      Dosing & bioavailability

      Typical dose
      5–10 g/d
      Best form
      Most evidence is based on the capsule or softgel form.
      Timing
      Consistent daily timing recommended; split larger doses if GI tolerance is a concern.
      With food?
      Optional

      Where to buy

      Affiliate links — we may earn a commission at no extra cost to you. Amazon code supplementsch-20 is auto-applied at checkout. We don't endorse specific brands; verify third-party testing (USP, NSF, Informed Sport) before purchase.

      Scientific evidence8Show studies
      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

      Live PubMed search

      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

      Live PubMed search

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

      Key findings

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

      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.

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