Nutrient chapter

Eugenol

A phenylpropene found in clove oil and other plants. Purified eugenol, clove oil, inhaled flavor mixtures and thermal products are distinct exposures.

12 recorded mechanisms · 1 availability situations · 1 preserved sources. Draft and verified records are labeled separately.

Read recorded mechanisms Open recursive mind map

The mechanisms

What the sources say this nutrient does, one relationship at a time. Plain wording comes first; the technical statement follows.

  1. At 2 micromolar, eugenol inhibited collagen- and arachidonic-acid-induced aggregation in human platelets but did not inhibit thrombin- or U46619-induced aggregation.

    Eugenol → Collagen- and arachidonic-acid-induced human platelet aggregation source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol 2 micromolar
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Washed human platelets; ADP-treated mouse pulmonary-thrombosis arm
    limitations
    Ex-vivo platelet inhibition and mouse thrombosis do not establish oral antithrombotic efficacy or bleeding safety in humans.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Washed human platelets; ADP-treated mouse pulmonary-thrombosis arm
    plain_language
    At 2 micromolar, eugenol inhibited collagen- and arachidonic-acid-induced aggregation in human platelets but did not inhibit thrombin- or U46619-induced aggregation.
    primary_references
    Eugenol Suppresses Platelet Activation and Mitigates Pulmonary Thromboembolism in Humans and Murine Models. (2024). https://pubmed.ncbi.nlm.nih.gov/38396774/ DOI: 10.3390/ijms25042098
    route
    In vitro; mouse intervention
    tissue
    Agonist-specific platelet aggregation

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 11–20

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Washed human platelets; ADP-treated mouse pulmonary-thrombosis arm · source_derived_draft · unverified_draft

    ## eugenol-platelet-agonist-selectivity At 2 micromolar, eugenol inhibited collagen- and arachidonic-acid-induced aggregation in human platelets but did not inhibit thrombin- or U46619-induced aggregation. Model/species: Washed human platelets; ADP-treated mouse pulmonary-thrombosis arm Tissue/system: Agonist-specific platelet aggregation Exposure: Eugenol 2 micromolar Route: In vitro; mouse intervention Duration: Acute Limits: Ex-vivo platelet inhibition and mouse thrombosis do not establish oral antithrombotic efficacy or bleeding safety in humans. Primary reference: Eugenol Suppresses Platelet Activation and Mitigates Pulmonary Thromboembolism in Humans and Murine Models. (2024). https://pubmed.ncbi.nlm.nih.gov/38396774/ DOI: 10.3390/ijms25042098 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  2. Eugenol suppressed collagen-induced PLC-gamma2/PKC, PI3K/Akt/GSK3beta, MAPK and cPLA2/thromboxane-A2 signaling in human platelets.

    Eugenol → Human platelet PLC-gamma2/PKC and cPLA2/thromboxane-A2 signaling source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol around the effective 2-micromolar range
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Washed human platelets
    limitations
    Pathway suppression does not identify one direct binding target and must not be generalized to every platelet agonist.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Washed human platelets
    plain_language
    Eugenol suppressed collagen-induced PLC-gamma2/PKC, PI3K/Akt/GSK3beta, MAPK and cPLA2/thromboxane-A2 signaling in human platelets.
    primary_references
    Eugenol Suppresses Platelet Activation and Mitigates Pulmonary Thromboembolism in Humans and Murine Models. (2024). https://pubmed.ncbi.nlm.nih.gov/38396774/ DOI: 10.3390/ijms25042098
    route
    In vitro
    tissue
    Signal phosphorylation, ATP release, P-selectin and calcium

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 22–31

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Washed human platelets · source_derived_draft · unverified_draft

    ## eugenol-platelet-pathways Eugenol suppressed collagen-induced PLC-gamma2/PKC, PI3K/Akt/GSK3beta, MAPK and cPLA2/thromboxane-A2 signaling in human platelets. Model/species: Washed human platelets Tissue/system: Signal phosphorylation, ATP release, P-selectin and calcium Exposure: Eugenol around the effective 2-micromolar range Route: In vitro Duration: Acute Limits: Pathway suppression does not identify one direct binding target and must not be generalized to every platelet agonist. Primary reference: Eugenol Suppresses Platelet Activation and Mitigates Pulmonary Thromboembolism in Humans and Murine Models. (2024). https://pubmed.ncbi.nlm.nih.gov/38396774/ DOI: 10.3390/ijms25042098 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  3. Eugenol reduced collagen-stimulated IKK and p65 phosphorylation and I-kappaB-alpha degradation; inhibitor ordering placed cPLA2 upstream of NF-kappaB in human platelets.

    Eugenol → Human platelet cPLA2-to-NF-kappaB signaling axis source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol with CAY10502 or BAY11-7082 pathway probes
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Platelets from healthy human donors; mouse mesenteric-thrombosis arm
    limitations
    Anucleate platelet NF-kappaB signaling and mouse plug formation do not establish chronic human outcomes.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Platelets from healthy human donors; mouse mesenteric-thrombosis arm
    plain_language
    Eugenol reduced collagen-stimulated IKK and p65 phosphorylation and I-kappaB-alpha degradation; inhibitor ordering placed cPLA2 upstream of NF-kappaB in human platelets.
    primary_references
    Eugenol: A Potential Modulator of Human Platelet Activation and Mouse Mesenteric Vascular Thrombosis via an Innovative cPLA2-NF-κB Signaling Axis. (2024). https://pubmed.ncbi.nlm.nih.gov/39200154/ DOI: 10.3390/biomedicines12081689
    route
    In vitro and in vivo mouse model
    tissue
    cPLA2 and NF-kappaB signaling

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 33–42

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Platelets from healthy human donors; mouse mesenteric-thrombosis arm · source_derived_draft · unverified_draft

    ## eugenol-cpla2-nfkb Eugenol reduced collagen-stimulated IKK and p65 phosphorylation and I-kappaB-alpha degradation; inhibitor ordering placed cPLA2 upstream of NF-kappaB in human platelets. Model/species: Platelets from healthy human donors; mouse mesenteric-thrombosis arm Tissue/system: cPLA2 and NF-kappaB signaling Exposure: Eugenol with CAY10502 or BAY11-7082 pathway probes Route: In vitro and in vivo mouse model Duration: Acute Limits: Anucleate platelet NF-kappaB signaling and mouse plug formation do not establish chronic human outcomes. Primary reference: Eugenol: A Potential Modulator of Human Platelet Activation and Mouse Mesenteric Vascular Thrombosis via an Innovative cPLA2-NF-κB Signaling Axis. (2024). https://pubmed.ncbi.nlm.nih.gov/39200154/ DOI: 10.3390/biomedicines12081689 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  4. Eugenol inhibited action potentials and both tetrodotoxin-sensitive and resistant sodium currents in rat dental afferent neurons, and capsazepine did not prevent the current inhibition.

    Eugenol → Voltage-gated sodium currents in rat dental afferent neurons source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol concentration-response with capsazepine
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Retrogradely labeled rat dental primary afferent neurons
    limitations
    The sodium-current effect was TRPV1-independent in this assay; it does not specify a safe human pulp concentration.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Retrogradely labeled rat dental primary afferent neurons
    plain_language
    Eugenol inhibited action potentials and both tetrodotoxin-sensitive and resistant sodium currents in rat dental afferent neurons, and capsazepine did not prevent the current inhibition.
    primary_references
    Eugenol inhibits sodium currents in dental afferent neurons. (2006). https://pubmed.ncbi.nlm.nih.gov/16998128/ DOI: 10.1177/154405910608501005
    route
    In vitro
    tissue
    Whole-cell voltage-gated sodium current

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 44–53

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Retrogradely labeled rat dental primary afferent neurons · source_derived_draft · unverified_draft

    ## eugenol-dental-sodium-current Eugenol inhibited action potentials and both tetrodotoxin-sensitive and resistant sodium currents in rat dental afferent neurons, and capsazepine did not prevent the current inhibition. Model/species: Retrogradely labeled rat dental primary afferent neurons Tissue/system: Whole-cell voltage-gated sodium current Exposure: Eugenol concentration-response with capsazepine Route: In vitro Duration: Acute Limits: The sodium-current effect was TRPV1-independent in this assay; it does not specify a safe human pulp concentration. Primary reference: Eugenol inhibits sodium currents in dental afferent neurons. (2006). https://pubmed.ncbi.nlm.nih.gov/16998128/ DOI: 10.1177/154405910608501005 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  5. Eugenol concentration-dependently inhibited human Nav1.5, favored the inactivated state, slowed recovery, and attenuated late sodium current.

    Eugenol → Human cardiac Nav1.5 sodium current source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol concentration-response; ouabain arrhythmia model
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    HEK cells expressing human Nav1.5; isolated guinea-pig atria
    limitations
    Channel inhibition can alter cardiac excitability; isolated atrial antiarrhythmic effects are not a human treatment result.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    HEK cells expressing human Nav1.5; isolated guinea-pig atria
    plain_language
    Eugenol concentration-dependently inhibited human Nav1.5, favored the inactivated state, slowed recovery, and attenuated late sodium current.
    primary_references
    Eugenol interacts with cardiac sodium channel and reduces heart excitability and arrhythmias. (2021). https://pubmed.ncbi.nlm.nih.gov/34217764/ DOI: 10.1016/j.lfs.2021.119761
    route
    In vitro and ex vivo
    tissue
    Cardiac sodium current and ex-vivo rhythm disturbance

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 55–64

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · HEK cells expressing human Nav1.5; isolated guinea-pig atria · source_derived_draft · unverified_draft

    ## eugenol-nav15 Eugenol concentration-dependently inhibited human Nav1.5, favored the inactivated state, slowed recovery, and attenuated late sodium current. Model/species: HEK cells expressing human Nav1.5; isolated guinea-pig atria Tissue/system: Cardiac sodium current and ex-vivo rhythm disturbance Exposure: Eugenol concentration-response; ouabain arrhythmia model Route: In vitro and ex vivo Duration: Acute Limits: Channel inhibition can alter cardiac excitability; isolated atrial antiarrhythmic effects are not a human treatment result. Primary reference: Eugenol interacts with cardiac sodium channel and reduces heart excitability and arrhythmias. (2021). https://pubmed.ncbi.nlm.nih.gov/34217764/ DOI: 10.1016/j.lfs.2021.119761 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  6. Eugenol activated inward current in capsaicin-sensitive trigeminal neurons and, with QX-314, produced sodium-channel and action-potential block that persisted after washout.

    Eugenol → QX-314 permanently charged sodium-channel blocker source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol alone or with QX-314
    duration
    Acute plus washout
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Rodent trigeminal-ganglion nociceptive neurons
    limitations
    Persistent cellular block is not a validated human dental regimen and may involve safety risks not tested here.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Rodent trigeminal-ganglion nociceptive neurons
    plain_language
    Eugenol activated inward current in capsaicin-sensitive trigeminal neurons and, with QX-314, produced sodium-channel and action-potential block that persisted after washout.
    primary_references
    Co-Application of Eugenol and QX-314 Elicits the Prolonged Blockade of Voltage-Gated Sodium Channels in Nociceptive Trigeminal Ganglion Neurons. (2020). https://pubmed.ncbi.nlm.nih.gov/33167484/ DOI: 10.3390/biom10111513
    route
    In vitro co-application
    tissue
    TRPV1-associated entry, sodium current and action potentials

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 66–75

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Rodent trigeminal-ganglion nociceptive neurons · source_derived_draft · unverified_draft

    ## eugenol-trpv1-qx314 Eugenol activated inward current in capsaicin-sensitive trigeminal neurons and, with QX-314, produced sodium-channel and action-potential block that persisted after washout. Model/species: Rodent trigeminal-ganglion nociceptive neurons Tissue/system: TRPV1-associated entry, sodium current and action potentials Exposure: Eugenol alone or with QX-314 Route: In vitro co-application Duration: Acute plus washout Limits: Persistent cellular block is not a validated human dental regimen and may involve safety risks not tested here. Primary reference: Co-Application of Eugenol and QX-314 Elicits the Prolonged Blockade of Voltage-Gated Sodium Channels in Nociceptive Trigeminal Ganglion Neurons. (2020). https://pubmed.ncbi.nlm.nih.gov/33167484/ DOI: 10.3390/biom10111513 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  7. Eugenol activated TRPV3 in heterologous and keratinocyte assays alongside related clove, oregano and thyme flavor compounds.

    Eugenol → Human transient receptor potential vanilloid 3 / TRPV3 source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol and related plant flavorants
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    TRP-expressing cells and skin keratinocytes
    limitations
    Channel activation can contribute to chemesthesis or irritation and is not evidence of a therapeutic skin effect.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    TRP-expressing cells and skin keratinocytes
    plain_language
    Eugenol activated TRPV3 in heterologous and keratinocyte assays alongside related clove, oregano and thyme flavor compounds.
    primary_references
    Oregano, thyme and clove-derived flavors and skin sensitizers activate specific TRP channels. (2006). https://pubmed.ncbi.nlm.nih.gov/16617338/ DOI: 10.1038/nn1692
    route
    In vitro
    tissue
    TRPV3 channel activation

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 77–86

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · TRP-expressing cells and skin keratinocytes · source_derived_draft · unverified_draft

    ## eugenol-trpv3 Eugenol activated TRPV3 in heterologous and keratinocyte assays alongside related clove, oregano and thyme flavor compounds. Model/species: TRP-expressing cells and skin keratinocytes Tissue/system: TRPV3 channel activation Exposure: Eugenol and related plant flavorants Route: In vitro Duration: Acute Limits: Channel activation can contribute to chemesthesis or irritation and is not evidence of a therapeutic skin effect. Primary reference: Oregano, thyme and clove-derived flavors and skin sensitizers activate specific TRP channels. (2006). https://pubmed.ncbi.nlm.nih.gov/16617338/ DOI: 10.1038/nn1692 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  8. Human myeloperoxidase with hydrogen peroxide oxidized eugenol toward a reactive intermediate consistent with a quinone methide.

    Human myeloperoxidase / MPO → Eugenol source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol with peroxidase and hydrogen peroxide
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Purified human MPO and activated human polymorphonuclear leukocytes
    limitations
    The reactive intermediate was inferred from chemistry; ordinary dietary exposure and organ-specific dose were not established.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Purified human MPO and activated human polymorphonuclear leukocytes
    plain_language
    Human myeloperoxidase with hydrogen peroxide oxidized eugenol toward a reactive intermediate consistent with a quinone methide.
    primary_references
    Metabolic activation of eugenol by myeloperoxidase and polymorphonuclear leukocytes. (1989). https://pubmed.ncbi.nlm.nih.gov/2562421/ DOI: 10.1021/tx00009a011
    route
    In vitro
    tissue
    Reactive-metabolite formation and protein binding

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 88–97

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Purified human MPO and activated human polymorphonuclear leukocytes · source_derived_draft · unverified_draft

    ## eugenol-mpo-activation Human myeloperoxidase with hydrogen peroxide oxidized eugenol toward a reactive intermediate consistent with a quinone methide. Model/species: Purified human MPO and activated human polymorphonuclear leukocytes Tissue/system: Reactive-metabolite formation and protein binding Exposure: Eugenol with peroxidase and hydrogen peroxide Route: In vitro Duration: Acute Limits: The reactive intermediate was inferred from chemistry; ordinary dietary exposure and organ-specific dose were not established. Primary reference: Metabolic activation of eugenol by myeloperoxidase and polymorphonuclear leukocytes. (1989). https://pubmed.ncbi.nlm.nih.gov/2562421/ DOI: 10.1021/tx00009a011 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  9. Activated human polymorphonuclear leukocytes exposed to 100 micromolar eugenol lost about 90% of intracellular glutathione over 30 minutes.

    Eugenol → Glutathione pool in activated human polymorphonuclear leukocytes source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol 100 micromolar
    duration
    30 minutes
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Phorbol-ester-stimulated human polymorphonuclear leukocytes
    limitations
    The large loss required activated cells and a high direct exposure; it is not evidence that culinary cloves cause systemic glutathione deficiency.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Phorbol-ester-stimulated human polymorphonuclear leukocytes
    plain_language
    Activated human polymorphonuclear leukocytes exposed to 100 micromolar eugenol lost about 90% of intracellular glutathione over 30 minutes.
    primary_references
    Metabolic activation of eugenol by myeloperoxidase and polymorphonuclear leukocytes. (1989). https://pubmed.ncbi.nlm.nih.gov/2562421/ DOI: 10.1021/tx00009a011
    route
    In vitro
    tissue
    Intracellular glutathione and oxidative burst

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 99–108

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Phorbol-ester-stimulated human polymorphonuclear leukocytes · source_derived_draft · unverified_draft

    ## eugenol-gsh-depletion Activated human polymorphonuclear leukocytes exposed to 100 micromolar eugenol lost about 90% of intracellular glutathione over 30 minutes. Model/species: Phorbol-ester-stimulated human polymorphonuclear leukocytes Tissue/system: Intracellular glutathione and oxidative burst Exposure: Eugenol 100 micromolar Route: In vitro Duration: 30 minutes Limits: The large loss required activated cells and a high direct exposure; it is not evidence that culinary cloves cause systemic glutathione deficiency. Primary reference: Metabolic activation of eugenol by myeloperoxidase and polymorphonuclear leukocytes. (1989). https://pubmed.ncbi.nlm.nih.gov/2562421/ DOI: 10.1021/tx00009a011 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  10. Glutathione ethyl ester raised intracellular glutathione and completely protected cultured rat liver cells from eugenol- or quinone-methide-induced death.

    Glutathione ethyl ester → Cell death caused by eugenol or its quinone-methide metabolite source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    dose
    Eugenol or quinone methide with glutathione ethyl ester
    duration
    Minutes to cell-death assessment
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Cultured rat liver Clone 9 cells
    limitations
    A cell-permeable experimental glutathione ester is not equivalent to dietary glutathione supplementation.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Cultured rat liver Clone 9 cells
    plain_language
    Glutathione ethyl ester raised intracellular glutathione and completely protected cultured rat liver cells from eugenol- or quinone-methide-induced death.
    primary_references
    Comparative toxicity of eugenol and its quinone methide metabolite in cultured liver cells using kinetic fluorescence bioassays. (1998). https://pubmed.ncbi.nlm.nih.gov/9512727/ DOI: 10.1006/taap.1997.8348
    route
    In vitro
    tissue
    Glutathione, membrane physiology and cell death
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 110–119

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Cultured rat liver Clone 9 cells · source_derived_draft · unverified_draft

    ## eugenol-gsh-rescue Glutathione ethyl ester raised intracellular glutathione and completely protected cultured rat liver cells from eugenol- or quinone-methide-induced death. Model/species: Cultured rat liver Clone 9 cells Tissue/system: Glutathione, membrane physiology and cell death Exposure: Eugenol or quinone methide with glutathione ethyl ester Route: In vitro Duration: Minutes to cell-death assessment Limits: A cell-permeable experimental glutathione ester is not equivalent to dietary glutathione supplementation. Primary reference: Comparative toxicity of eugenol and its quinone methide metabolite in cultured liver cells using kinetic fluorescence bioassays. (1998). https://pubmed.ncbi.nlm.nih.gov/9512727/ DOI: 10.1006/taap.1997.8348 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  11. Ascorbic acid and glutathione reduced DNA-adduct formation during in-vitro peroxidase activation of eugenol by about 66% and 90%, respectively.

    L-Ascorbic acid → DNA adducts from peroxidase-activated eugenol source_derived_draftungraded
    Experimental context and source evidence
    dose
    Eugenol with peroxidase/hydrogen peroxide plus ascorbate or glutathione
    duration
    Acute
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Cell-free peroxidase systems and human HL-60 cells
    limitations
    Cell-free protection does not prove that vitamin supplementation prevents toxicity in exposed humans.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Cell-free peroxidase systems and human HL-60 cells
    plain_language
    Ascorbic acid and glutathione reduced DNA-adduct formation during in-vitro peroxidase activation of eugenol by about 66% and 90%, respectively.
    primary_references
    Oxidation of eugenol to form DNA adducts and 8-hydroxy-2'-deoxyguanosine: role of quinone methide derivative in DNA adduct formation. (1998). https://pubmed.ncbi.nlm.nih.gov/9525278/ DOI: 10.1093/carcin/19.3.437
    route
    In vitro
    tissue
    DNA adducts and oxidative base damage

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 121–130

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Cell-free peroxidase systems and human HL-60 cells · source_derived_draft · unverified_draft

    ## eugenol-ascorbate-gsh-adduct-protection Ascorbic acid and glutathione reduced DNA-adduct formation during in-vitro peroxidase activation of eugenol by about 66% and 90%, respectively. Model/species: Cell-free peroxidase systems and human HL-60 cells Tissue/system: DNA adducts and oxidative base damage Exposure: Eugenol with peroxidase/hydrogen peroxide plus ascorbate or glutathione Route: In vitro Duration: Acute Limits: Cell-free protection does not prove that vitamin supplementation prevents toxicity in exposed humans. Primary reference: Oxidation of eugenol to form DNA adducts and 8-hydroxy-2'-deoxyguanosine: role of quinone methide derivative in DNA adduct formation. (1998). https://pubmed.ncbi.nlm.nih.gov/9525278/ DOI: 10.1093/carcin/19.3.437 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    Complete structured claim and evidence

  12. At antibacterial concentrations, eugenol depolarized and damaged Shigella flexneri membranes, increased oxidative damage and depleted bacterial ATP.

    Eugenol → Shigella flexneri membrane integrity and intracellular ATP source_derived_draftungraded
    Experimental context and source evidence
    dose
    MIC 0.5 mg/mL; MBC 0.8 mg/mL
    duration
    Growth-curve interval
    evidence_access
    Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
    evidence_scope
    literature_reviewed; model-specific source-derived curation
    experimental_model
    Shigella flexneri ATCC 12022 in broth and food matrices
    limitations
    Food-preservation concentrations and bacterial effects are not human systemic pharmacology.
    nutrient_topic
    Eugenol chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Eugenol
    organism
    Shigella flexneri ATCC 12022 in broth and food matrices
    plain_language
    At antibacterial concentrations, eugenol depolarized and damaged Shigella flexneri membranes, increased oxidative damage and depleted bacterial ATP.
    primary_references
    Antibacterial Effect of Eugenol on Shigella flexneri and Its Mechanism. (2022). https://pubmed.ncbi.nlm.nih.gov/36076751/ DOI: 10.3390/foods11172565
    route
    In vitro and food-matrix exposure
    tissue
    Growth, membrane integrity, membrane potential and ATP

    Eugenol: mechanism of action and interactions (2026-09-20) · lines 132–141

    Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Shigella flexneri ATCC 12022 in broth and food matrices · source_derived_draft · unverified_draft

    ## eugenol-shigella-membrane At antibacterial concentrations, eugenol depolarized and damaged Shigella flexneri membranes, increased oxidative damage and depleted bacterial ATP. Model/species: Shigella flexneri ATCC 12022 in broth and food matrices Tissue/system: Growth, membrane integrity, membrane potential and ATP Exposure: MIC 0.5 mg/mL; MBC 0.8 mg/mL Route: In vitro and food-matrix exposure Duration: Growth-curve interval Limits: Food-preservation concentrations and bacterial effects are not human systemic pharmacology. Primary reference: Antibacterial Effect of Eugenol on Shigella flexneri and Its Mechanism. (2022). https://pubmed.ncbi.nlm.nih.gov/36076751/ DOI: 10.3390/foods11172565 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
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Availability and dependencies

Each situation shows the normal role first, then what the sources report under a specific condition. A shortfall in the diet, a fault in the machinery, and a low blood reading are kept separate because they are not the same thing.

Increasing intracellular glutathione prevents reactive eugenol-metabolite toxicity in cultured cells

Condition: machinery_impairment · Cells receive glutathione ethyl ester before or during exposure.

Normal role: Eugenol and its quinone-methide metabolite deplete protective thiols and can cause cell death.

Recorded consequence: Intracellular glutathione rises and cell death is prevented.

Scope: In-vitro rescue experiment.

The sources

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  • Eugenol: mechanism of action and interactions (2026-09-20)Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · unverified_draftRead preserved source

Recorded disagreements

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