Feverfew is a short, bushy perennial plant that grows in fields along roadsides. Its leaves and yellow flowers resemble those of chamomile. For medicinal uses the plant is cut before full flowering and the leaves are dried in the shade. 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.