The roots and leaves are used medicinally, the stems and seeds are used in confectionary.
Active Constituents: Volatile oil(1.5%), including phellandrene and pinene, angelica acid, coumarin compounds, bitter principle, tannin, resin, triterpenoids
Pharmacological Actions: Carminative, Anti-Spasmodic, Expectorant, Diuretic, Diaphoretic, Sedative
Some of the pharmacological activities demonstrated are phytoestrogen activity, analgesic activity, cardiovascular effects, smooth muscle relaxing effects, antiallergy and immuno modulating activity and antibacterial activity.
Contraindications: Should not be used during pregnancy or menstruation. It also should be avoided in cases of acute gastritis, peptic ulcers and kidney inflammations. Direct exposure to sunlight should be avoided when using this plant because it may cause dermatitis in some individuals.
Taken in excessive doses may cause depression of the central nervous system. The plant may also cause photosensitisation. The fresh root is exceedingly toxic and it has been used as lethal poison by Canadian Indians.