Crude drug sample data base

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Crude drug name

Market name大戟
Formal name大戟
Japanese nameたいげき, Taigeki
Vernacular nameDaekeuk
Latin nameEuphorbiae Radix
English nameEuphorbia Root
Original plant nameEuphorbia sieboldiana Morr. et Decne, (Natsutōdai)
Family nameEuphorbiaceae
Used partClassificationPlant origin
Sub classification root
Collection informationRepublic of Korea, Taegu
Collection date1971/04/03
CollectorTsuneo Namba
TMPW No.31

The capital city, provincial capital city or the representative  
location of its administrative area is indicated.  
Production area information
Collection information
Republic of Korea,Taegu

Scientific information data base

Common name京大戟, Jingdaji, Euphorbiae Pekinensis Radix (CP2020), Peking Euphorbia Root (CP2020)
crude drug image
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Original plant nameEuphorbia pekinensis Ruprecht
original plant image
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Family nameEuphorbiaceae
Used partroot
Official compendiumCP (2020 ed.)
Clinical applicationAs a diuretic and drastic purgative, Jingdaji is applied for edema, a feeling of fullness in the chest, chest pain, and retention of phlegm.
Medical systemTraditional Chinese medicine
Drug effect in
traditional medicine
Purgatives for removing water retention
Beneficial effect[Property and Flavor] Cold; bitter; toxic.
[Meridian Tropism] Lung, spleen and kidney meridians.
[Actions] To purge to expel retained fluid, disperse swelling and dissipate binds.
[Indications] Edema distention and fullness, hydrothorax and ascites, phlegm-fluid retention, aggregation and accumulation, cough and panting caused by qi counterflow, inhibited of defecation and utination, swelling abscess, sore and toxin, scrofula and phlegm nodule.
Contraindicated for pregnant women. It must not be used with Gancao (甘草).
Chemical constituentFlavonoids
E. pekinensis (*C1):
Kaempferol, Quercetin, Quercitrin, Rutin

Hydrolyzable tannins & related compounds
E. pekinensis (*C1):
3-O-Galloyl-(-)-shikimic acid, Corilagin, Geraniin, Quercetin-3-O-(2"-O-galloyl)-beta-D-glucoside, Kaempferol-3-O-(2"-O-galloyl)-beta-D-glucoside, Ellagic acid, Quercetin-3-O-(2"-O-galloyl)-beta-D-rutinoside, 1,3,4,6-tetra-O-Galloyl-beta-D-glucose

Other aromatic derivatives
E. pekinensis (*C1):
Gallic acid, Methyl gallate

E. pekinensis (*C1):
(-)-Quinic acid, (-)-Shikimic acid

Chemical structure

Pharmacological effectUnknown.
DNA sequenceU42535, L37582, L13185
Classical reference
(Chinese Herbal Classic "Zhenglei bencao")
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DiseaseAscites, Edema, Oliguria, Constipation, Pleural effusion, Pain due to flatulence of hypochondrium, Cough, Cervical lymphadenopathy, Subcutaneous nodule
Formulationrarely used in formula
Related drugsHongyadaji: the root of Knoxia valerianoides, Caodaji; the root of Lespedeza formosa
ReferencesCP2020: Pharmacopoeia of the People's Republic of China 2020 edi.
C1)Planta Med.,67,501-504(2001).
RemarksAt present, three species of Daji (= Taigeki) are distributed in China, Kōgataigeki of family Rubiaceae, Sōtaigeki of family Leguminosae and Kyōtaigeki of family Euphorbiaceae. Though each plant belongs to a different family, they are all called Taigeki. By nature, the real Taigeki described in materia medicas is Kyōtaigeki. However, only Kōgataigeki is imported to Japan in the present day.
Kōgataigeki: the root of Knoxia valerianoides Thorel ex Pitard of family Rubiaceae.
Sōtaigeki: the root bark of Lespedeza formosa (Vog.) Koehne of family Leguminosae or L. davidii Franch.
In Xinjiang Uigur Autonomous Region, the root of Euphorbia soongarica Boiss. is used as Taigeki. Wataigeki, produced in Japan, is the root of E. pekinensis Rupr. var. japonensis Makino (Jap. name: Takatōdai, Ibukidaigeki). The root is cut vertically and dried, however it is not available in the market now. Korean Taigeki is the root of E. sieboldiana Morr. et Decne. (Jap. name: Natsutōdai).
Last renewal date2021/09/27