"Feverfew" (Tanacetum parthenium) is a flowering plant native to Europe, recognized for its small yellow blooms and bioactive parthenolide content. This sesquiterpene lactone interacts with inflammatory pathways that regulate vascular tone and neural signaling. Feverfew also participates in metabolic functions tied to neurotransmitter balance and circulatory adaptation. Furthermore, it affects enzymatic processes involved in immune modulation. Long utilized in herbal traditions, feverfew remains a widely incorporated botanical in vascular and neurological wellness applications.