Herb Profile

Feverfew

Botanical profile with evidence, safety, and practical fit.

Last reviewed: 2 human studies cited

C Preliminary

Use extra caution Avoid in pregnancy; possible mouth ulcers/GI upset; allergy risk in Asteraceae sensitive users; caution with anticoagulants/antiplatelets. Details

Evidence
Limited Human Evidence
Typical onset
Varies by prep
Safety rating
High caution
Best for
Anti Inflammatory, Analgesic, Cognitive function, Inflammatory signaling
Avoid / review if
Pregnancy, Asteraceae/Ragweed Allergy, Anticoagulant Use Without Clinician Review

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Feverfew

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Where to go next — guides & comparisons

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Safety & Cautions

Avoid in pregnancy; possible mouth ulcers/GI upset; allergy risk in Asteraceae sensitive users; caution with anticoagulants/antiplatelets.

28%

High caution — review carefully

Detailed safety fields

Pregnancy, breastfeeding, and contraindications

  • - Pregnancy
  • - Asteraceae/Ragweed Allergy
  • - Anticoagulant Use Without Clinician Review
  • - Upcoming Surgery
  • - May Increase Bleeding Risk With Anticoagulants/Antiplatelets/NSAIDs
  • - Caution With Migraine Medications.

Safety classifications

  • - Anticoagulant Caution: Bleeding or anticoagulant-adjacent caution language is present.

Full safety note

  • - Avoid in pregnancy; possible mouth ulcers/GI upset; allergy risk in Asteraceae sensitive users; caution with anticoagulants/antiplatelets.

Safety labels

  • - Anticoagulant Caution

Evidence-based safety

Caution when combined

These pairings share a flagged risk mechanism. They are additive-effect cautions derived from contraindication data, not confirmed clinical interactions. Consult a clinician before combining.

High-Priority Caution

147 flagged pairings

Bleeding / anticoagulant risk

Browse the grouped cautions below. The list scrolls inside this card when long.

Bleeding / anticoagulant risk

Evidence Summary

Evidence lens

Early signal that needs stronger human replication before practical claims.

PreliminaryLimited Human Evidence

Human clinical evidence: Present in source signals

Mechanistic / preclinical: Mechanism mappedInflammatory Signaling Modulation · Neurotransmitter Modulation · NF KB Modulation

Research maturity: Preliminary or mixedLong Term Human Evidence May Be Limited.

Safety boundary: Safety note availableAvoid in pregnancy; possible mouth ulcers/GI upset; allergy risk in Asteraceae sensitive users; caution with anticoagulants/antiplatelets.

This profile cites 2 human studies.

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.

A

Strong

Multiple RCTs, consistent direction, adequate effect size

B

Moderate

Some RCTs or consistent observational data in humans

C

Preliminary / Mixed

Animal or in-vitro only, or conflicting human data

D

Traditional / Theoretical

Traditional use only; no controlled human trials

Clinical Study Summaries (3)Cited studies informing this profile. RCTs and reviews shown first.

Dosing & Timing

Dose guidance

Preparation specific; use standardized product label for Leaf capsules/extracts standardized to parthenolide and require source backed dosage review before therapeutic claims.

How Feverfew Works

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

Mechanism Pathway — How Feverfew Works

How Feverfew WorksFeverfew acts on pathways via anti inflammatory, leading to anti inflammatory.FeverfewBiological pathwayAnti InflammatoryAnti InflammatoryObservable outcomeNF KB InhibitionParallel pathway
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & Biological Pathways
Preclinical pathways

Proposed mechanisms from in vitro and animal research; these do not confirm clinical outcomes in humans.

Inflammatory Signaling ModulationNeurotransmitter ModulationNF KB Modulation

Active Compounds

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

Compare & Sourcing

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

Review available sources for Feverfew

Independent database mapping — evaluated separately from safety and efficacy scores.

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Affiliate-ready sourcing

Feverfew product picks

Affiliate recommendations for Feverfew. Review safety, dose, and product quality before buying.

Affiliate disclosure: we may earn a commission from qualifying links at no extra cost to you. How we stay independent.

Budget pick

NOW Foods

NOW Feverfew 400 mg

Budget pick for standardized feverfew leaf capsules — most commonly used for migraine prevention.

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Best overall

Nature's Way

Nature's Way Feverfew Herb

Best overall for a TRAPped (standardized to parthenolide) feverfew capsule with clean labeling.

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Premium pick

Gaia Herbs

Gaia Herbs Feverfew Herb

Premium phyto-caps feverfew with Gaia's traceability system and standardized parthenolide content.

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Product Form & Quality Guidelines

When sourcing Feverfew, verify the label for:

  • Standardized Extract: Confirm active content percentages on the supplement facts panel (e.g. standardized to specific marker compounds) rather than simple raw herb weights.
  • Third-Party Testing: Look for independent purity labels (USP, NSF, ConsumerLab, or Eurofins) to ensure the product is free from heavy metals, solvents, and contaminants.
  • Form Bioavailability: Ensure the form matches evidence-supported configurations (e.g. standardized active extracts like bacosides, withanolides, or curcuminoids) for optimal onset and digestion tolerance.

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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Botanical profile context

How to interpret Feverfew

Feverfew dosage ranges, effects, drug interactions, and harm-reduction safety guide for anti inflammatory. Limited Human Evidence research evidence. Use this herb profile as a starting point for evidence review, not as a recommendation to start a new supplement. Botanical products can vary by plant part, extract ratio, standardization, dose, and contaminant testing, so two labels with the same common name may not behave the same way.

When reviewing Feverfew, compare the traditional-use context against the human evidence, mechanism notes, and safety cautions. Pay special attention to pregnancy, breastfeeding, liver or kidney disease, blood-pressure effects, sedation, stimulation, anticoagulant use, antidepressants, and any prescription medication overlap.

For product decisions, prefer transparent labels, named extracts, clear serving sizes, and third-party quality testing. Avoid treating a long list of possible mechanisms as proof that an herb will solve a specific condition.