Feverfew
Evidence status
Limited evidence to recommend for any consumer outcome yet.
1 papers · 3 claims · 5 outcomes scored
Outcomes
What feverfew actually does, by outcome
Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.
Outcome Effect size Evidence Dose Weeks Rank
Get fewer headaches and migraines Not enough research
Cuts the number of attacks per month so headache days stop piling up.
1 RCT n=— 50 mg 24 wk
1 RCT
n=—
50 mg
24 wk
—
Reduce migraine disruption Not enough research
Headaches steal fewer workdays, social plans, and hours of patience.
1 RCT n=— 50 mg 24 wk
1 RCT
n=—
50 mg
24 wk
—
Ease nausea during migraines Not enough research
Less stomach-churning so attacks are easier to ride out.
1 RCT n=— 50 mg 24 wk
1 RCT
n=—
50 mg
24 wk
—
| Outcome | Effect | Evidence | Dose | Weeks | Rank |
|---|---|---|---|---|---|
| Get fewer headaches and migraines Not enough research | | 1 RCT n=— | 50 mg | 24 wk | — |
| Reduce migraine disruption Not enough research | | 1 RCT n=— | 50 mg | 24 wk | — |
| Ease nausea during migraines Not enough research | | 1 RCT n=— | 50 mg | 24 wk | — |
Risk profile
Adverse events and known drug interactions
Safety events
seizure severe
gastrointestinal complaints mild
mouth ulcers mild
lethargy mild
Nervousness / tension / feeling jumpy
Insomnia / disturbed sleep / nocturnal restlessness
Stiffness or pain in joints
Palpitations
Sources
Generated August 14, 2026