Du Zhong – Eucommia bark

Nature: sweet, warm

Enters: Liver, Kidney

Actions: Tonifies the kidneys and liver, strengthens tendons and bones; holds and calms the fetus; promotes smooth circulation of Qi and blood.

• Kidney and liver deficiency: weak, sore lumbar region and knees, Wei syndrome, fatigue, frequent urination.
• Kidney and liver deficiency: threatened or habitual miscarriage, restless fetus; cold deficient kidney patterns with bleeding during pregnancy.
• Liver/kidney Yang deficiency cold: impotence, frequent urination.
• Lowers blood pressure: for hypertension, dizziness, lightheadedness from liver Yang rising.
• Compared to Xu duan, Du zhong is more effective when the problem is due primarily to deficiency, while Xu duan is used more to treat lower back pain with significant aspects of both wind-damp and kidney deficiency.
• Fry in salt water to increase kidney-tonification properties.
Hsu: Hypotensive – the fried herb is more potent, and the decoction is better than the tincture.
• Analgesic.
• Can decrease absorption of cholesterol.
DY: Secures the Chong Mai.
• The major herb to treat lumbar pain. Can be used for all types – excess or deficiency, hot or cold – when combined appropriately with other herbs.
• With Xu duan for mutual reinforcement, to supplement the liver and kidneys, strengthen the sinews and bones, stop metrorraghia during pregnancy, and quiet the fetus. For indication such as:
– 1. Aches and pains, stiffness, lumbar pain, and weakness of the lower limbs due to kidney-liver deficiency. (Du Zhong Wan) Salt mix-fry both herbs.
– 2. Knee and lumbar pain due to wind-dampness.
– 3. Metrorrhagia during pregnancy and threatened miscarriage accompanied by lumbar pains due to kidney deficiency. (Salt mix-fry both herbs.)
– 4. Traumatic lumbar pain. (Qian Jin Bao Yun Dan) Use salt mix-fried Du zhong and wine mix-fried Xu duan.
Du zhong is more powerful than Xu duan at supplementing the liver and kidneys, strengthening the sinews, bones, and lumbar area. But Xu duan promotes circulation within the vessels, dispels blood stasis, and knits together fractured bones and torn ligaments.

Dose: 6-15g

2 comments on “Du Zhong – Eucommia bark

  1. Daniel B says:

    I found your website looking up teasel root/xu duan. I also see that du zhong may be helpful. I have some tendonitis in several joints, laxity, and lumbar pain. I also hold a lot of tension in the upper t-spine. I just for teasel root tincture today and also use solomon’s seal and mullein root. Do you have any other suggestions for these issues? Thank you for any information.

    • Peter Borten says:

      I tend to think in terms of a diagnosis, usually a TCM diagnosis, because it leads to more effective herbs. For instance, if the problem is due to blood deficiency, we could use herbs that build blood without even needing those herbs to have a specific association with ligaments, and the underlying pattern should get corrected and with it the symptoms you describe.

      So, since I don’t know the diagnosis – maybe liver blood deficiency, kidney yang deficiency, liver and kidney yin deficiency, wind-dampness, blood stasis, spleen deficiency, etc. – I can only guess at herbs with an affinity for those areas and tissues. And the first things that come to mind are the ones you already mentioned and bai shao, ge gen, sang ji sheng, wu jia pi, ge gen, ba ji tian, niu xi, ru xiang, fang feng, du huo, ji xue teng, gou ji, etc.

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