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Niu Xi (牛膝, Huai Niu Xi), the root of Achyranthes bidentata, invigorates the blood and dispels stasis, tonifies the Liver and Kidney to strengthen the sinews and bones, and directs blood and fire downward (for upper-body bleeding and rising yang).
Latin / Pharmaceutical Name
Achyranthes bidentata (Radix Achyranthis Bidentatae)
Common English Name
Achyranthes root
Taste
Bitter, sweet, sour
Temperature
Neutral
Channels Entered
Liver, Kidney
Actions & Functions
- Invigorates the blood and dispels stasis (gynaecological)
- Tonifies the Liver and Kidney and strengthens the sinews and bones
- Directs blood, fire and qi downward (nosebleed, toothache, rising yang)
- Promotes urination (bloody/painful)
Indications
Amenorrhoea and dysmenorrhoea from stasis; weak, sore lower back and knees; upper-body bleeding and Liver-yang headache/dizziness; and painful urination.
Dosage
6-15 g in decoction.
Common Combinations
With Du Zhong and Sang Ji Sheng for the lower back; with Dai Zhe Shi for rising yang.
Cautions & Contraindications
Contraindicated in pregnancy and in heavy menstruation; use with caution in Spleen deficiency with loose stools.
