Native to southeastern Europe, the migraine reliever is now widespread over the world.
(Tanacetum parthenium) Native to southeastern Europe, feverfew is now widespread throughout Europe, North America, and Australia. The migraine-relieving activity of feverfew is believed to be due to parthenolide, an active compound that helps relieve smooth muscle spasms. In particular, it helps prevent the constriction of blood vessels in the brain (one of the leading causes of migraine headaches). Medicinally use the feverfew leaves, but all parts of the plant that grow above ground may also be used for medicinal purposes.