Jackinthepulpit Tuber is the dried tuber of Arisaema erubescens (Wall.) Schott. , Arisaema heterophyllum Bl. or Arisaema amurense Maxim. (Fam. Araceae).

Action: To remove damp-phlegm, to dispel wind and arrest convulsions, and to promote the subsidence of induration and swelling.

Indications: Intractable phlegm with cough; vertigo; stroke with phlegm in the throat, deviation of the eye and the mouth, and hemiplegia; epilepsy and convulsions; tetanus. External use of the crude drug for boils, sores, snake and insect bite.

Precaution: Used with caution in pregnancy.