Evidence review in progress

Feverfew

Tanacetum parthenium

Feverfew has been studied for migraine prevention, but the trials are small and use different plants, preparations, and amounts. The mixed evidence is more useful than a blanket works-or-doesn't label.

Evidence snapshot reviewed October 16, 2026

Check the botanical identity in the Plant Atlas →

Botanical identity

Which plant this profile means

This profile is tied to Tanacetum parthenium, not American feverfew, and it keeps fresh leaf, powder, and extracts separate.

Scientific name
Tanacetum parthenium
WCVP taxon ID
2916972
Atlas record
Open this name in the Plant Atlas

Preparation boundaries

Same plant, different exposure

These forms stay separate in the evidence bank. A result for one cannot be copied onto the others.

mixed leaf preparations

leaf or aerial parts · Taken by mouth

Trials used different feverfew sources, preparations, and parthenolide contents; their findings do not establish that every leaf powder or extract is equivalent.

fresh raw leaf

leaf · Taken by mouth

Fresh chewed leaf can irritate the mouth and is not equivalent to an encapsulated or standardized trial preparation.

Research-bot status

The sources are organized. The claims aren’t public yet.

The bot has matched the source material to the right plant and preparation. Possible claims stay private until the exact source and wording clear the record-level review.

Sources in review
1
Possible claims found
0
Still awaiting review
0
Blocked source
0

Research connections

What this ingredient has been studied around

No preparation-matched study connection is public yet. A connection can appear before a result interpretation, but it never counts as proof of benefit.

Reviewed evidence

No detailed evidence card published yet

The queue is not the publication

Finding a study is the beginning of review, not a reason to publish a benefit claim. Source excerpts, model suggestions, and unresolved conclusions remain private.

Profile sources

Read the source material