Eucommia, Du Zhong 杜仲

Du Zhong (TCM)

Hooker & Hooker, Icones Plantarum, 1890

Bundles of chopped, wild Eucommia bark for sale at the Chengdu Market.
(Adam, 2017)

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Botanical name:
Eucommia ulmoides

Parts used:
Bark

Temperature & Taste:
Warm, dry. Sweet, slightly Pungent

Classifications:
3M. ARTHRITICS
D. Clear Wind and Damp
N. Tonics

Uses:
1. Tonifies Liver and Kidney, strengthens Joints and Bones:
-weak or painful lower back and knees
-strengthens bones and joints; with suitable herbs for chronic joint diseases
-Fatigue, urinary frequency

2. Moves Qi and Blood:
-promotes circulation, especially in the elderly with joint weakness and pain

3. Strengthen the Kidneys, Calms the Fetus:
-bleeding during pregnancy from cold and weak Kidneys
-Threatened Miscarriage; Restless Fetus, Back Pain during Pregnancy, Habitual Miscarriage

4. Stops Rising Yang:
-Hypertension, Dizziness and light-headedness


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DOSE:
9–15 grams in decoction
2–5 grams in Powder

Main Combinations:
1. Lower back pain and weakness: 
i. with Wheezing, Eucommia Du Zhong with Walnut and Psoralea Bu Gu Zi.
ii. Eucommia Du Zhong with Curculigo Xian Mao
iii. Eucommia Du Zhong with Rehmannia Shu Di Huang, Cornus Shan Zhu Yu
iv. Eucommia Du Zhong with Dipsacus Xu Duan and Achyranthes Niu Xi.
v. Eucommia Du Zhong with Dipsacus Xu Duan and Viscum Sang Ji Sheng
vi. Eucommia Du Zhong with Achyranthes Niu Xi, Acanthopanax Wu Jia Pi.
vii. Cook Eucommia Du Zhong with an Ox-tail, adding Goji and Dang Gui
viii. Lower Back and Knee pain and weakness, barely able to walk, Eucommia Du Zhong with Cyathula Niu Xi, Notopterygium Qiang Huo, Cinnamon, Acanthopanax Wu Jia Pi (as in Ba Ji Wan, from The Great Peace Sagacious Benevolence Formulary),
2. Acute Lumbar strain, Eucommia Du Zhong with Dipsacus Xu Duan
3. Chronic Wind-Cold Joint Pain: Eucommia Du Zhong with Cinnamon twig Gui Zhi, Myrrh (Mo Yao), Frankincense (Ru Xiang), Achyranthes Niu Xi, Saposhnikovia Fang Feng, Licorice (as in Shu Feng Ding Tong Wan)
4. Threatened Miscarriage:
i. Eucommia Du Zhong with Dipsacus Xu Duan, Cuscuta Tu Si Zi and Viscum Sang Ji Sheng
ii. from Kidney deficiency, Eucommia Du Zhong with Cuscuta Tu Si Zi with Dipsacus Xu Duan, Dang Gui, Lycium Gou Qi Zi, Atractylodes Bai Zhu (as in Bu Shen Gu Chong Wan)
5. Impotence and Urinary frequency from Kidney deficeicny, Eucommia Du Zhong with Cornus Shan Zhu Yu and Cuscuta Tu Si Zi.
6. Spermatorrhea, Premature Ejaculation, Lower Back Pain, Eucommia Du Zhong with Cornus Shan Zhu Yu, Cuscuta Tu Si Zi and Velvet Deer Horn
7. Habitual Miscarriage, Eucommia Du Zhong with Dipsacus Xu Duan and Dioscorea Shan Yao.
8. Hypertension, Dizziness:
i. Eucommia Du Zhong with Paeonia Bai Shao and Prunella Xia Ku Cao.
ii. Eucommia Du Zhong with Paeonia Bai Shao and Viscum Sang Ji Sheng.

Major Formulas:
An Tai Yin
Ba Ji Wan
Bu Shen Gu Chong Wan
Dang Gui Di Huang Yin
Du Huo Ji Sheng Tang
Qing E Wan
Shu Feng Ding Tong Wan
Tian Ma Gou Teng Yin
You Gui Wan
You Gui Yin


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Cautions:
1. If used for Kidney Yin deficiency with Fire, it should be combined with Phellodendron Huang Bai and Anemarrhena Zhi Mu.

Main Preparations used: