Scientific names for feverfew are Tanacetum parthenium and Chrysanthemum parthenium. Common names are feverfew, featherfoil, midsummer daisy, and bachelor's button. They are not subject to the same scrutiny and regulations as prescription medicines. Feverfew comes as a capsule or liquid extract. Follow the directions printed on the product label or given by your doctor.
Most side effects caused by feverfew are mild.
It may cause mouth and tongue sores, trouble sleeping, nervousness, or tiredness. Check with your doctor. Feverfew should not be used if you are pregnant or breast-feeding. Do not give feverfew to children less than 2 years old. Some natural remedies have the same effects as prescription medicines.