What Feverfew Is
Feverfew is Tanacetum parthenium, a small daisy-family herb used traditionally to prevent migraine attacks. Remedy's Feverfew supplies 1000 mg of the herb per vegan capsule, with 60 capsules per bottle, as a single ingredient.
It belongs to the Asteraceae family alongside ragweed, chrysanthemums and marigolds, which is where its main allergy caution comes from.
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1000 mg per capsule: Single-ingredient dried feverfew herb.
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60 capsules: Two months at 1 daily.
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Compound of interest: Parthenolide, found in the leaves.
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Used for: Prevention, never for stopping an attack.
The full claim map is in our feverfew overview.
Supplement Facts
Serving size: 1 Vegan Capsule. Servings per container: 60.
| Amount Per Serving |
Amount |
% Daily Value |
| Feverfew (Tanacetum parthenium) |
1000 mg |
* |
* Daily Value not established.
Other ingredients: Cellulose, Glycerin, Water (vegan capsule)
Directions: One capsule daily.
Non-GMO, vegan, gluten free, no additives, no preservatives. Made in the USA.
The Number That Decides It
We would rather print the effect size than repeat the headline, because the two are very different.
| Measure |
Result |
| Best trial, feverfew arm |
4.8 down to 2.9 attacks a month |
| Best trial, placebo arm |
4.8 down to 3.5 attacks a month |
| Difference between arms |
0.6 attacks a month |
| Cochrane trials included |
6, covering 561 patients |
| Pooled analysis |
Not possible; outcome measures differed |
Almost every page quotes the 1.9-attack reduction and stops. The number that matters is the difference against placebo, which is 0.6 attacks a month.[1]Feverfew for preventing migraine — Cochrane Database of Systematic Reviews (2015) View source A 2025 meta-analysis of 9 trials in 899 participants found frequency down 1.11, duration down 4.43 with heterogeneity of 98%, and pain severity down 0.63 which was not significant.[2]Systematic review and meta-analysis of Tanacetum parthenium: evaluating its efficacy in migraine relief — Natural Product Research (2025) View source Both are in what the migraine trials show.
How to Use It
One capsule daily, and the honest caveat is that the positive trial used a different preparation entirely.
|
The positive trial |
This capsule |
| Preparation |
Standardised CO2 extract |
Dried feverfew herb |
| Amount |
6.25 mg three times daily |
1000 mg once daily |
| Daily total |
18.75 mg |
1000 mg |
| Duration |
16 weeks |
Judge at 16 weeks too |
| Directly comparable |
No |
No |
An extract and a herb powder are different substances, so a bigger number on the label is not a bigger dose of what was tested.[3]Efficacy and safety of 6.25 mg t.i.d. feverfew CO2-extract (MIG-99) in migraine prevention - a randomized, double-blind, multicentre, placebo-controlled study — Cephalalgia (2005) View source The comparison is worked through in dosage and which form works.
Safety
The trial data here are genuinely reassuring, and the cautions are about who rather than what.
| Measure or group |
Detail |
| Adverse events, feverfew |
9 of 107, or 8.4% |
| Adverse events, placebo |
11 of 108, or 10.2% |
| Statistical difference |
p = 0.654, not significant |
| Pregnancy or planning pregnancy |
Avoid |
| Anticoagulants or antiplatelets |
Ask before starting; bleeding-risk concern |
| Ragweed, chrysanthemum, marigold or daisy allergy |
Same plant family; be cautious |
Mouth ulceration is the classic reported effect and is associated mainly with chewing fresh leaves rather than with capsules. The full list is in side effects and who should avoid it.
Where It Sits Against Other Options
A 2020 systematic review of 19 randomized studies covered the herbal alternatives directly.
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Feverfew: Findings on efficacy described as mixed.
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Butterbur: Positive, albeit limited, with a liver concern in unpurified forms.
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Chamomile and menthol: Preliminary findings, for acute use.
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Prescription prevention: Far larger effect sizes than any of these 3.
The comparison is in feverfew vs butterbur and other options.
Capsules, Tea and Fresh Leaves
Feverfew is grown widely, and the traditional preparations have no trial evidence behind them.
| Form |
Trial evidence |
Dose control |
| Standardised CO2 extract |
The rigorous trial |
Exact |
| Capsules of dried herb |
Included in older trials |
Exact |
| Tea or infusion |
0 trials |
None |
| Fresh chewed leaves |
The traditional practice |
None |
Those are covered in feverfew tea and the feverfew plant, and the chamomile mix-up in is feverfew the same as chamomile.
Why Choose Remedy's Feverfew
One ingredient, a stated amount, and an effect size we are willing to print.
| What you get |
Why it matters |
| 1000 mg feverfew herb per capsule |
A stated amount, not a proprietary blend |
| Single ingredient |
Any effect or reaction traces to 1 thing |
| Vegan capsule |
Cellulose, glycerin and water |
| 60 capsules |
Two months at 1 daily |
| Honest positioning |
Prevention only, at 0.6 attacks a month |
Frequently Asked Questions
What is feverfew good for? +
Migraine prevention, modestly. The best trial cut attacks by 1.9 a month against 1.3 on placebo, a difference of 0.6.
Does feverfew actually work for migraines? +
A 2025 pooling of 9 trials in 899 people found attack frequency down 1.11. Pain severity fell 0.63 and was not statistically significant.
How much feverfew should I take? +
One capsule of 1000 mg daily. The positive trial used a standardised CO2 extract at 6.25 mg 3 times a day, which is a different preparation.
How long does feverfew take to work? +
The trials ran 16 weeks after a 4-week baseline. Judging it at 2 or 3 weeks is not a fair test.
Does feverfew stop a migraine once it starts? +
No. All 6 trials in the Cochrane review studied prevention rather than treating an attack in progress.
Who should not take feverfew? +
Anyone pregnant, anyone on anticoagulants, and anyone allergic to ragweed, chrysanthemums, marigolds or daisies. Those are 3 clear exclusions.
What are the risks of taking feverfew? +
In the largest trial, adverse events were 8.4% against 10.2% on placebo. Mouth ulceration is the classic effect, mainly from chewed leaves.
What not to take with feverfew? +
Anticoagulant and antiplatelet medicines without asking first. That is the 1 category with a genuine concern behind it.
Is feverfew the same as chamomile? +
No. They are 2 different genera in the same daisy family, which is why one allergy caution covers both.
Is feverfew or butterbur better for migraines? +
A 2020 review of 19 studies called feverfew mixed and butterbur positive but limited. Unpurified butterbur carries a liver concern that feverfew does not.
Is feverfew tea good for migraines? +
There are 0 trials of feverfew tea. Every positive result came from capsules or a standardised extract.
How long does 1 bottle last? +
Sixty capsules is 2 months at 1 daily, which covers half of a fair 16-week test.
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