Elecampane and Amrida
Sweetmeats which confer immortality (Latin, helenium campana ) or inula campana) Pliny tells us the plant so called sprang from Helen's tears. The sweetmeat so called is a coarse sugar-candy. There was also an electuary so called, said to cure wounds given in fight.
Here, take this essence of elecampane; Rise up, Sir George, and fight again.
Miracle Play of St. George.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894