Chrysanthemum parthenium, commonly known as feverfew or midsummer daisy, is a synonym of Tanacetum parthenium. It is a daisy-like perennial herb native to Europe, more specifically the Balkan Peninsula and the Caucasus, but now it is widely cultivated throughout Europe, North America, and Australia. The name ‘feverfew’ originates from the Latin word febrifuge, which means fever reducer. It was documented that the first-century Greek physician Dioscorides used feverfew as an anti-inflammatory agent, and he prescribed it for all hot inflammations. In Western Herbal Medicine, feverfew has been used to treat arthritis, asthma, dermatitis, fever, headache, and other inflammatory conditions.

Scientific research on its anti-inflammatory effect shows IκB-inhibition of parthenolide, a sesquiterpene lactone contained in feverfew, and inhibitions of COX and 5- lipoxygenase by flavonoids such as tanetin, apigenin, and luteolin 7-glucuronides. More recently, the essential oil of feverfew was also analyzed to reveal anti-bacterial activity against both gram (+) and (-) bacteria.