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Feverfew

Cochrane-reviewed traditional remedy for migraine prevention: modest but real effect with a stable extract.

Why

Feverfew (Tanacetum parthenium) has been used in European phytotherapy for headache and 'fever' for centuries. The Cochrane review of feverfew for migraine prevention reported a modest reduction in migraine frequency with the stable CO2 extract (MIG-99) versus placebo. Effect is smaller than topiramate or propranolol but the side-effect profile is benign.

How it works

Parthenolide and related sesquiterpene lactones inhibit serotonin release from platelets, dampen prostaglandin and leukotriene synthesis, and inhibit NF-κB, collectively reducing the trigeminovascular inflammatory cascade implicated in migraine.

Expected onset · Prophylactic effect emerges over 6–12 weeks of daily use; not an acute migraine treatment

How to take

Dosage

Stable CO2 extract (MIG-99): 6.25 mg three times daily, the dose used in the larger RCTs. Dried leaf: 50–125 mg daily of a preparation standardised to 0.2–0.4% parthenolide.

Timing

Divided dosing across the day

On the label

Look for the MIG-99 stable CO2 extract or a parthenolide-standardised dried leaf; non-standardised feverfew is highly variable.

Ideal for

Adults with episodic migraine looking for a low-risk prophylactic, especially when standard prophylaxis is declined or not tolerated.

Safety

Avoid in pregnancy (uterotonic) and breastfeeding. Chewing raw leaves causes mouth ulcers in around 1 in 10 users. Stop 2 weeks before surgery (mild antiplatelet effect). Caution with anticoagulants and antiplatelet drugs.

Evidence

At a glance

Cochrane 2015 SR (6 RCTs, n=561): the stable MIG-99 CO2 extract reduced migraine frequency more than placebo: modest but consistent direction. Diener 2005 Cephalalgia RCT (n=170): 6.25 mg MIG-99 three times daily significantly reduced migraine frequency over 16 weeks. Effect smaller than first-line prophylactics; favourable safety profile.

Where to get it

Shop Feverfew on Amazon

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