Herb Profile

Thyme

Thymus vulgaris

Thyme (Thymus vulgaris) carries a Grade C rating — limited evidence.

Last reviewed: •3 sources citedReport a correctionProfile-wide ·C Limited

Use extra caution — Culinary use is generally low risk; concentrated oil/extracts can irritate mucosa and require dose caution. Details

Evidence
Limited Evidence
Typical onset
Varies by prep
Safety rating
Moderate caution
Best for
Sleep, Cognitive function, Inflammatory signaling
Avoid / review if
Pregnancy/Breastfeeding For Medicinal Dose Essential Oil, Significant GI Irritation, Thyme/Lamiaceae Allergy.
Thyme monograph visual
The Hippie Scientist

At a glance

From this profile's structured data
Evidence
Grade C
Safety
Culinary use is generally low-risk; concentrated oil/extracts can irritate mucosa and require dose caution.
Profile context
sleep
Next steps

Continue reading

Safety

Safety & Cautions

Culinary use is generally low risk; concentrated oil/extracts can irritate mucosa and require dose caution.

Elevated caution

Caution level: Elevated. One caution category applies — read it before use.

  • Pregnancy/Breastfeeding CautionPregnancy or breastfeeding caution language is present.
Detailed safety fields

Pregnancy, breastfeeding, and contraindications

  • Pregnancy/Breastfeeding For Medicinal Dose Essential Oil
  • Significant GI Irritation
  • Thyme/Lamiaceae Allergy.
  • Potential Additive Irritation With Other Essential Oils
  • Theoretical Caution With Anticoagulants For High Dose Extracts.

Safety classifications

  • Pregnancy/Breastfeeding Caution: Pregnancy or breastfeeding caution language is present.

Full safety note

  • Culinary use is generally low risk; concentrated oil/extracts can irritate mucosa and require dose caution.

Safety labels

  • Pregnancy/Breastfeeding Caution

Evidence-based safety

Caution when combined

Severity and certainty are shown separately. A high-priority caution can still be theoretical: these pairings are screened from shared contraindication mechanisms and are not automatically documented clinical interactions. Provenance identifies the source fields that produced each flag; it does not upgrade the certainty of the pairwise claim.

High-Priority Caution

147 flagged pairings

Bleeding / anticoagulant risk

Representative pairings are shown below. Large mechanism groups are intentionally summarized to keep profiles focused and crawl-efficient.

Bleeding / anticoagulant riskCertainty: Theoretical

Data provenance recorded for 147 of 147 pairings in this mechanism group.

+135 more pairings share this mechanism. Use the Safety Checker to review a specific combination.

Evidence

Evidence Summary

Evidence lens

Read as directional context, not settled clinical proof.

LimitedLimited Evidence

Human clinical evidence: Not the primary signal

Mechanistic / preclinical: Mechanism mapped — Inflammatory Signaling Modulation · Neurotransmitter Modulation · Cellular Protection

Research maturity: Theoretical / mechanistic research — Mechanistic or unresolved evidence is kept separate from established human outcomes.

Safety boundary: Safety note available — Culinary use is generally low risk; concentrated oil/extracts can irritate mucosa and require dose caution.

This profile cites 3 human studies.

Study design details
Evidence Grade

Grade C: Limited Evidence

Evaluation of methodological rigor, population reach, and evidence alignment.

Design Match
Narrative review
Risk of Bias
High
Consistency
Not assessed
Strongest recorded design is a narrative review, drawn from 3 recorded studies, none of which measured an outcome in people.
How evidence grades work

Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.

Strong
Multiple RCTs, consistent direction, adequate effect size
Moderate
Some RCTs or consistent observational data in humans
Preliminary / Mixed
Animal or in-vitro only, or conflicting human data
Traditional / Theoretical
Traditional use only; no controlled human trials
Clinical Study Summaries (3)0 human evidence sources · 0 human trials · Participant totals not consistently reported · Consistency not yet classifiable

What the evidence actually shows

This table contains 3 structured sources, including 0 human evidence sources; 0 are human trials.

StudyDesignNDoseDurationPopulationOutcomeResult & magnitudeSource

Antimicrobial Activity of Basil, Oregano, and Thyme Essential Oils

Sakkas H et al. · J Microbiol Biotechnol · 2017

Background
Narrative review

Summarizes selected literature without the full prespecified search and selection methods of a systematic review.

——————PubMed →

Thymol, thyme, and other plant sources: Health and potential uses

Salehi B et al. · Phytother Res · 2018

Background
Narrative review

Summarizes selected literature without the full prespecified search and selection methods of a systematic review.

——————PubMed →

Thymol and Thyme Essential Oil-New Insights into Selected Therapeutic Applications

Kowalczyk A et al. · Molecules · 2020

Background
Narrative review

Summarizes selected literature without the full prespecified search and selection methods of a systematic review.

——————PubMed →

Dosing & Timing

No standardized dose
Preparation specific; use standardized product label for Leaf is used as tea and require source backed dosage review before therapeutic claims.
How Thyme works

Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.

Mechanism Pathway — How Thyme Works

How Thyme WorksThyme acts on biological target pathways via anti inflammatory, leading to sleep quality.ThymeBiological TargetBiological pathwayAnti InflammatorySleep Quality ↑Onset + depthNeurotransmitterModulation
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & biological pathways (preclinical)
  • Inflammatory Signaling Modulation
  • Neurotransmitter Modulation
  • Cellular Protection
  • NF KB Modulation

Active Compounds

Key constituents studied in Thyme, with full pharmacology and safety profiles.

Compare related active botanicals

Explore botanicals with similar chemistry, effects, or safety considerations in the Botanical Activity Atlas.

Guides that use Thyme

Compare & Sourcing

Compare side-by-side tradeoffs or verify active marker guidelines.

Safety first · Harm reduction

This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.

Learn how we evaluate confidence, safety, and intensity on the methodology page.

Editorial Review

Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.

Editorial Standards →

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