Elecampane (Inula helenium), pronounced /ˌɛlɪkæmˈpeɪn/[2] and also called horse-heal or elfdock, is a widespread plant species in the sunflower family Asteraceae.

The root is thick, branching and mucilaginous, and has a bitter taste and a camphoraceous odour with sweet floral (similar to violet) undertones.

[9] Corrupted variations of the name Elecampane, such as alicompagne, hallecumb pain, and jollup and plain, have been used as miracle cures that can revive the dead in Mummers' play in Britain and Ireland.

[10] [11] [12] [13] The 17th-century herbalist Nicholas Culpeper considered elecampane to be ruled by Mercury and used it to warm a cold and windy stomach, to resist poison, to strengthen sight, and to clear internal blockages.

Theophrastus recommended using the plant in oil and wine to treat the bites of vipers, spiders and pine caterpillars in his Historia Plantarum.