Peking spurge root (Daji)
Euphorbia pekinesis Rupr. (Family: Euphorbiaceae)
Pharmaceutical Name: Radix Euphorbiae
seu Knoxiae
Botanical Name: 1. Euphorbia pekinesis Rupr. (Family: Euphorbiaceae);
2. Knoxia valerianoides Thorel et
Pitard (Familia: Rubiaceae)
Common Name: Euphorbia root, Peking
spurge root.
Source of Earliest Record: Shennong
Bencao Jing.
Part Used & Method for Pharmaceutical
Preparations: The roots are dug in autumn or spring. After the fibrous
roots have been removed, the roots are cleaned and dried in the sun, and then
they are soaked in vinegar.
Properties & Taste: Bitter,
pungent, cold and poisonous.
Meridians: Lung, kidney and large
intestine.
Functions:
1. To transform water and reduce edema; 2. To disperse nodules and relieve
swelling.
Indications & Combinations:
1. Boils, carbuncles, scrofula and
subcutaneous nodules. Peking spurge root (Daji) is used with Pleione
rhizome (Shancigu) and Moleplant seed (Qianjinzi) for internal and external use
in the formula Zijin Ding.
2. Edema of the face and the body, retention
of fluid in the chest and ascites. Peking spurge root (Daji) is used with
Jujube (Dazao), Kansui root (Gansui) and Genkwa flower (Yuanhua) in the formula
Shizao Tang.
Dosage: 1.5-3 g.
Cautions & Contraindications: This
herb should not be mixed with Licorice root (Gancao), and it is contraindicated
during pregnancy.
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