Estafiate or iztauyatl (A. ludoviciana ssp. mexicana) is one of the most popular medicinal plants in Mexican phytotherapy and is nowadays used especially for gastrointestinal pain, as a vermifuge and as a bitter
stimulant. The historical and modern uses of this species are reviewed. The first report of its medicinal use dates back to the 16th century, but at that time it was used for completely different illnesses. Only very
limited pharmacological studies to evaluate these claims are available; antiinflammatory, antibacterial and antihelmintic effects have been reported. The aerial parts contain a large number of sesquiterpene lactones,
flavonoids as well as essential oil which has not yet been studied in detail.