Asafetida is a fetid inspissated sap from Central Asia, the solidified juice of the Narthex Asafetida, a large umbelliferous plant. It was formerly used in medicine as an anti-spasmodic, and in cases of flatulency, in hysteric paroxysms, and other nervous affections. Notwithstanding its very disagreeable odour it is used as a seasoning in the East, and sometimes in Europe. An inferior sort is the product of certain species of Ferula. Research Asafetida