Feverfew

What is Feverfew?

Feverfew is a perennial herb native to the Balkan Peninsula that has spread across Europe and the Americas. Its name comes from the Latin 'febrifuga,' meaning fever reducer, though modern research has focused primarily on its role in migraine prevention. The plant has been used medicinally for over 2,000 years, appearing in early Greek texts and later becoming a staple of British herbal apothecaries.

How does Feverfew work?

Feverfew's primary active compound, parthenolide, inhibits the release of serotonin from blood platelets and blocks certain inflammatory signaling molecules — both of which play a role in triggering migraines. It also reduces the production of prostaglandins, the chemicals that drive pain and inflammation throughout the body. This combination of platelet, serotonin, and inflammation modulation is what makes it useful for both headache prevention and general inflammatory discomfort.

What forms does Feverfew come in?

Dried leaf capsules and standardized extracts are the most practical and consistent forms for therapeutic use. Tinctures are available but alcohol extraction can reduce parthenolide content. Chewing raw leaves was the traditional British folk remedy but commonly causes mouth ulcers and is generally not recommended. Tea is mild and often below therapeutic parthenolide levels.

Where it comes from:

Feverfew was documented in Dioscorides' 'De Materia Medica' around 65 AD for fevers and inflammation. It enjoyed a major revival in 1970s Britain after anecdotal reports of dramatic migraine relief spread widely, which eventually sparked the modern clinical trials that have defined its evidence base.

What does Feverfew help with?

Feverfew is a small flowering herb in the daisy family. Greek and British herbalists used it for fevers and headaches for hundreds of years. Its main active compound is called parthenolide.

Most human research on feverfew looks at one thing: preventing migraines. There, daily use over several months has been tested in randomised trials. For its other uses the evidence is much thinner, and some rests on tradition alone.

• Getting migraines less often
  Good evidence — randomised human trials of daily use over several months. In these trials, people took feverfew every day for months. Those taking it had fewer migraine attacks than before. The herb was tested as a way to prevent attacks, not to stop one in progress.
  Evidence grade B · Traditional tier T2
• Migraines that are milder and shorter when they do come
  Good evidence — the same randomised trials of regular daily use. Regular users had fewer migraine days per month in these studies. The attacks they did get were rated less intense and shorter. The effect looked larger in people who get migraines often.
  Evidence grade B · Traditional tier T2
• Tension headaches (the tight, band-like kind)
  Long traditional use · not yet tested in trials — limited human evidence, weaker than the migraine work. Some people report fewer tension headaches while taking feverfew. The human evidence here is much weaker than for migraines. In lab studies, the herb calmed swelling and relaxed muscle a little.
  Evidence grade D · Traditional tier T2
• Sore, stiff joints and arthritis pain
  Long traditional use · not yet tested in trials — early research only, plus long herbal use. Feverfew has a long record of use for aching joints. Early research points to less joint swelling. Reports describe it as much milder than prescription anti-swelling drugs.
  Evidence grade D · Traditional tier T2
• Painful periods and cramps
  Long traditional use · not yet tested in trials — tradition plus lab mechanism; no human trial on file. European herbalists used feverfew for painful periods. In lab studies, parthenolide lowered prostaglandins, the chemicals behind cramping. No human trial for period pain is held in this library.
  Evidence grade insufficient · Traditional tier T2
• Ongoing low-grade pain and swelling in the body
  Long traditional use · not yet tested in trials — lab studies of parthenolide only. In lab studies, parthenolide blocked several pathways that drive swelling. That may point to less pain and puffiness. No human trial on file has tested this.
  Evidence grade insufficient · Traditional tier T2
• Bringing down a mild fever
  Long traditional use · not yet tested in trials — traditional use only. Cooling fevers was feverfew's first known use, and it gave the herb its name. Old herbal texts noted a mild effect on low fevers. Modern human studies on fever are not on file here.
  Evidence grade insufficient · Traditional tier T2
• Feeling anxious or low in mood
  Long traditional use · not yet tested in trials — early reports and tradition only. A few early reports describe a mild calming effect. In lab work, this is linked to less brain swelling or to serotonin activity. This is an early area of interest, not a settled use.
  Evidence grade insufficient · Traditional tier T2
• Red, scaly skin and psoriasis
  Long traditional use · not yet tested in trials — early lab work on topical parthenolide; few clinical trials. Creams with parthenolide have been tried on inflamed skin. In lab studies, the compound quieted swelling signals in skin cells. Good human trials are still lacking.
  Evidence grade insufficient · Traditional tier T2

What Feverfew has not been shown to do

• It has not been shown to stop a migraine that has already started.
• It has not been shown to help much in people who get migraines only now and then.
• It has not been shown to work as strongly as prescription anti-swelling drugs for joint pain.
• It has not been shown in human trials to ease period pain.
• It has not been shown in modern human trials to bring a fever down.
• It has not been shown to help anxiety or low mood; that work is only at an early stage.
• It has not been shown in solid human trials to clear psoriasis.

How to read this:

The grades here rate the evidence, not how well it will work for you. A means many matching human trials. B means at least one good human trial. C means small or early human studies. D means the human evidence is weak or mixed. Insufficient means no human study at all, just lab work, animal work or tradition. The file for this herb does not record trial sizes or doses, so none are quoted. This page lists options, not advice, and it is not a plan for treating illness. Talk to a doctor or pharmacist before you start, above all if you take other medicines.

What can Feverfew help prevent?

• Migraine attacks: daily use reduces frequency in migraine-prone individuals
• Medication overuse headache: by reducing migraine frequency, may lower reliance on acute pain medications

Which foods are rich in Feverfew?

Feverfew is an isolated herb and is not meaningfully present in common foods. To support the same pathways — reducing inflammatory triggers and supporting healthy circulation — focus on anti-inflammatory foods like fatty fish (salmon, mackerel), leafy greens (spinach, kale), olive oil, turmeric, ginger, and magnesium-rich foods like pumpkin seeds and dark chocolate. Magnesium in particular is closely linked to migraine prevention and works well alongside feverfew. Limit processed foods, alcohol, and tyramine-rich foods like aged cheeses and cured meats, which are common migraine triggers.

What are the side effects of Feverfew?

• Mouth ulcers and inflammation (mainly with raw leaf chewing)
• Stomach upset, nausea, or bloating
• Post-feverfew syndrome: rebound headaches, anxiety, and muscle stiffness when stopping abruptly after long-term use
• Skin rash or contact dermatitis (especially with topical use)
• Mild dizziness
• Increased heart rate (rare)

Good to know:

Feverfew is generally safe for most adults when used at recommended doses for up to four months. It should be avoided during pregnancy as it may stimulate uterine contractions. People allergic to ragweed, chrysanthemums, or other Asteraceae family plants should avoid it.

How much Feverfew should you take?

• Recommended daily: 50–150 mg of dried leaf extract standardized to 0.2–0.7% parthenolide, taken once daily; some protocols use up to 300 mg/day split into two doses
• Best time of day: Morning is most common, though timing is flexible — consistency matters more than clock time
• With or without food: Take with food to reduce the chance of stomach upset
• Time to effect: Allow 4–12 weeks of consistent daily use before evaluating results for migraine prevention
• How long to take it: Appropriate for ongoing daily use for migraine prevention; if discontinuing after long-term use, taper gradually over 2–4 weeks to avoid rebound headache syndrome