Teasel root (Xuduan)
Dipsacus asperoides C. Y. Cheng at T. M. Ai (Fam. Dipsacaceae)
Pharmaceutical Name: Radix Dipsaci
Botanical Name: Dipsacus
asperoides C. Y. Cheng at T.
M. Ai (Fam. Dipsacaceae)
Common Name: Dipsacus root, Teasel root, Himalayan teasel root.
Source of Earliest Record: Shennong
Bencao Jing.
Part Used & Method for Pharmaceutical
Preparations: The roots are dug in the period from July to August. After
the fibrous roots have been removed, the roots are cut into slices and dried in
the sun.
Properties & Taste: Bitter, sweet,
pungent and slightly warm.
Meridians: Liver and kidney.
Functions: 1. To tonify the liver and
kidneys; 2. To promote the circulation of blood; 3. To strengthen the bones and
tendons.
Indications & Combinations:
1. Deficiency of the liver and kidneys
manifested as soreness and pain in the lower back and knees or weakness of the
legs. Teasel root (Xuduan) is used with Eucommia bark (Duzhong) and
Cyathula root (Niuxi).
2. Derangement of Chong and Ren meridians
due to deficient liver and kidneys manifested as profuse menstrual flow,
uterine bleeding and threatened abortion (restless fetus). Teasel root
(Xuduan) is used with Eucommia bark (Duzhong), Donkey hide gelatin (Ejiao), Astragalus
root (Huangqi), Mugwort leaf (Aiye) and Chinese angelica root (Danggui).
3. External injury. Teasel root (Xuduan)
is used with Drynaria (Gusuibu) and Dragon's blood (Xuejie) for reducing swelling
and stopping pain.
Dosage: 10-20 g, decocted in water for internal use. Used stir-baked
for metrorrhagia. Appropriate amount of powdered herb for external use.
Cautions & Contraindications: The
fried herb is used for uterine bleeding and the powdered herb for external use.
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