In traditional medicine feverfew was taken for fevers and pain, particularly for arthritis and migraines, but also for stomach aches and toothache.

From Patient information leaflet for preparations licensed as Traditional Herbal remedies in the UK Indication: Prevention of migraine. (note double blind trials show it is no better than placebo).

Side effects/precautions: hypersensitivity; caution with drugs that affect coagulation and bleeding, pregnancy or breastfeeding; may cause mouth inflammation or ulcers (including swelling of lips, tongue irritation, bleeding gums, loss of taste, burning when swallowing), photosensitivity, indigestion, nausea, flatulence, constipation, diarrhoea, abdominal bloating, heartburn, allergic rashes, increased heart rate, eosinophilia, abnormal liver function tests, arthritis, renal failure, Raynaud’s phenomenon, hypertension. From Patient information leaflet for preparations licensed as Traditional Herbal remedies in the UK.