In traditional herbal medicine: The leaves and whole plant are digestive, diuretic, febrifuge, hypotensive, narcotic, sedative and stimulant. Use of the plant depresses the central nervous system, whilst it is also reputedly anaesthetic and hallucinogenic. It is used internally in the treatment of diarrhoea, nausea, indigestion, colic, hiccups, malaria and feverish illnesses. Externally, it is used to treat scorpion bites and to remove ticks. The leaves can be harvested and used as required, whilst the whole plant is harvested when in flower and dried for later use[Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995].