Component

Dihydroberberine

Dihydroberberine. Species, exposure and limitations are retained in each linked claim.

4 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

How nutrients influence it

Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.

How nutrients reach it in more than one step

Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.

Tracing routes…

What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What it acts on

  1. Dihydroberberine had approximately fivefold greater intestinal absorption than berberine in the animal experiments.

    Dihydroberberine → Berberine source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"}
    experimental_model
    Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments
    exposure
    Oral berberine, dihydroberberine and antibiotic pretreatment
    limitations
    Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred.
    nutrient_topic
    Berberine research collection; topical membership is not evidence of a direct dietary effect. · Berberine
    organism
    Gut bacteria and rodents including KK-Ay mice
    plain_language
    The reduced form crossed the intestinal barrier more readily in these animals.
    primary_references
    [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    tissue_or_cell_type
    Gut lumen, intestinal tissue and circulation

    Berberine: metabolism, nutrient connections and drug interactions (2026-09-17) · lines 155–166

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments · source_derived_draft · unverified_draft

    ### berberine-dhb-absorption Dihydroberberine had approximately fivefold greater intestinal absorption than berberine in the animal experiments. Condition category: normal nutrient_topic: Berberine research collection; topical membership is not evidence of a direct dietary effect. plain_language: The reduced form crossed the intestinal barrier more readily in these animals. organism: Gut bacteria and rodents including KK-Ay mice tissue_or_cell_type: Gut lumen, intestinal tissue and circulation experimental_model: Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments limitations: Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred. exposure: Oral berberine, dihydroberberine and antibiotic pretreatment evidence_span: {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"} [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    Complete structured claim and evidence

  2. Intestinal tissues converted dihydroberberine back to berberine; heat inactivation did not prevent conversion, supporting a nonenzymatic oxidation process.

    Dihydroberberine → Berberine source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"}
    experimental_model
    Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments
    exposure
    Oral berberine, dihydroberberine and antibiotic pretreatment
    limitations
    Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred.
    nutrient_topic
    Berberine research collection; topical membership is not evidence of a direct dietary effect. · Berberine
    organism
    Gut bacteria and rodents including KK-Ay mice
    plain_language
    The absorbed form can change back before appearing in blood.
    primary_references
    [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    tissue_or_cell_type
    Gut lumen, intestinal tissue and circulation

    Berberine: metabolism, nutrient connections and drug interactions (2026-09-17) · lines 168–179

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments · source_derived_draft · unverified_draft

    ### berberine-dhb-reoxidation Intestinal tissues converted dihydroberberine back to berberine; heat inactivation did not prevent conversion, supporting a nonenzymatic oxidation process. Condition category: normal nutrient_topic: Berberine research collection; topical membership is not evidence of a direct dietary effect. plain_language: The absorbed form can change back before appearing in blood. organism: Gut bacteria and rodents including KK-Ay mice tissue_or_cell_type: Gut lumen, intestinal tissue and circulation experimental_model: Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments limitations: Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred. exposure: Oral berberine, dihydroberberine and antibiotic pretreatment evidence_span: {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"} [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. Antibiotic depletion reduced berberine-to-dihydroberberine conversion and blood berberine in KK-Ay mice.

    Gut bacterial biomass → Plasma berberine exposure source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    evidence_span
    {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"}
    experimental_model
    Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments
    exposure
    Oral berberine, dihydroberberine and antibiotic pretreatment
    limitations
    Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred.
    nutrient_topic
    Berberine research collection; topical membership is not evidence of a direct dietary effect. · Berberine
    organism
    Gut bacteria and rodents including KK-Ay mice
    plain_language
    Removing part of the processing system reduced absorption.
    primary_references
    [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    tissue_or_cell_type
    Gut lumen, intestinal tissue and circulation
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Berberine: metabolism, nutrient connections and drug interactions (2026-09-17) · lines 181–192

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments · source_derived_draft · unverified_draft

    ### berberine-bacteria-depletion Antibiotic depletion reduced berberine-to-dihydroberberine conversion and blood berberine in KK-Ay mice. Condition category: machinery_impairment nutrient_topic: Berberine research collection; topical membership is not evidence of a direct dietary effect. plain_language: Removing part of the processing system reduced absorption. organism: Gut bacteria and rodents including KK-Ay mice tissue_or_cell_type: Gut lumen, intestinal tissue and circulation experimental_model: Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments limitations: Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred. exposure: Oral berberine, dihydroberberine and antibiotic pretreatment evidence_span: {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"} [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    Complete structured claim and evidence

  2. Gut bacterial nitroreductases converted berberine to dihydroberberine.

    Gut bacterial nitroreductases, species and isoform not resolved → Berberine source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"}
    experimental_model
    Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments
    exposure
    Oral berberine, dihydroberberine and antibiotic pretreatment
    limitations
    Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred.
    nutrient_topic
    Berberine research collection; topical membership is not evidence of a direct dietary effect. · Berberine
    organism
    Gut bacteria and rodents including KK-Ay mice
    plain_language
    Gut microbes can change the chemical form before it is absorbed.
    primary_references
    [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    tissue_or_cell_type
    Gut lumen, intestinal tissue and circulation

    Berberine: metabolism, nutrient connections and drug interactions (2026-09-17) · lines 142–153

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments · source_derived_draft · unverified_draft

    ### berberine-microbial-reduction Gut bacterial nitroreductases converted berberine to dihydroberberine. Condition category: normal nutrient_topic: Berberine research collection; topical membership is not evidence of a direct dietary effect. plain_language: Gut microbes can change the chemical form before it is absorbed. organism: Gut bacteria and rodents including KK-Ay mice tissue_or_cell_type: Gut lumen, intestinal tissue and circulation experimental_model: Bacterial enzyme, intestinal tissue, absorption and antibiotic-depletion experiments limitations: Animal absorption difference is not a human bioavailability multiplier. Nitroreductases are unresolved bacterial enzyme families; no nitrogen-removal or vitamin-depletion mechanism inferred. exposure: Oral berberine, dihydroberberine and antibiotic pretreatment evidence_span: {"source_cache": "artifacts/berberine-research/26174047.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e", "start_char": 0, "end_char": 1403, "text_sha256": "17b12fa4d334225782db565c20fc34051522dafd77be442782aa82bd1ef34c9e"} [berberine-p26174047] Transforming berberine into its intestine-absorbable form by the gut microbiota. (2015). https://pubmed.ncbi.nlm.nih.gov/26174047/ DOI: 10.1038/srep12155
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards