Du Zhong - Eucommia Bark
TCM Materia Medica
Du Zhong TCM Herb Classifications and Usages
The TCM herb "du zhong" which in english is 
"eucommia bark", is categorized within the "herbs that tonify yang" functional grouping. It is thought to enter the kidney and liver channels and exhibits acrid, sweet (gan) and warm (wen) taste/temperature properties.
Dosages and preparations will vary according to each individual and the overall approach of a formula, but generally this herb has the following dosage and/or preparation guidelines:
- Dosage: 6-15g
Of many possible clinical applications, it may be considered to influence the following issues/symptoms:
- Tonify liver and kidneys, strengthen sinews and bones - weak, painful knees and lower back, fatigue, frequent urination.
- Promotes smooth flow of qi and blood circulation.
- Calms the fetus - for cold deficient kidney patterns with bleeding during pregnancy, prevents miscarriages from deficiency.
- Recently used for dizziness from liver yang rising (hypertension).
Du Zhong may potentially be used, in coordination with a well tailored formula (in most cases), to influence the following conditions: back pain, fatigue, hypertension (high blood pressure), knee pain and/or urinary disorders (lin disease)
While it may not always be included depending on the manufacturer or herbalist making the formula, du zhong is generally included in the following 8 formulas:
ViewDu Huo Ji Sheng Wan (Solitary Hermit Teapills)
For chronic pain due to obstruction (bi zheng) with liver and kidney deficiency. For lower back pain often with weakness and/or pain in the knees. For arthritis, especially the type affected by col…
ViewGu Zhi Shu Song Wan (Osteoporosis Tablets)
For bone disorders includeing osteoporosis and osteopenia. May help reduce or prevent further bone loss.
ViewNuan Gong Yun Zi Wan (Warm Uterus & Conception Pills)
Infertility, history of miscarriage due to blood deficiency and/or cold in the lower jiao from kidney yang deficiency. Irregular menstruation. Lower abdominal pain, lower back pain, uterine and/or …
ViewWu Ji Bai Feng Wan (Black Chicken White Phoenix Pills)
Coming Soon...
ViewXi Guan Jie Bi Tong Wan (Knee Joint Pain Relief)
Arthritis from damp heat in Chinese Medicine terms. Knee issues with kidney and liver systems involvement. Lower body pain and/or inflammation - hips, knees, ankles, toes especially when the pain m…
ViewYou Gui Wan (Restore the Right Kidney Pill)
Cold extremities, fatigue, weak/aching low back, knees, waist, aversion to cold, loose stools - due to kindney yang deficiency. Impotence, infertility, low libedo, low sperm count, abnormal sperm mo…
ViewZhuang Gu Guan Jie Wan (Invigorate Bone and Joint Pills)
Damp and Cold bi-syndromes - arthritis (osteo primarily), joint pain, muscles aches that is aggravated with cold and/or damp weather - weakness of the knee, pain in lower back, general weakness, pain…
ViewZhuang Yang Wan (Strengthen Kidney Yang And Preserve Power Pill)
Tonifies the kidney yang and astringe the jing (essence), primarily for sexual dysfunction in older males - symptoms may include impotence, erectile dysfunction, premature ejaculation, and other sign…
As noted above, du zhong is within the herbs that tonify yang functional group. All the herbs in this category are listed below.
(truncated intro "... symptoms: fear of cold, cold extremities, sore and weak lower back and lower extremities, pale tongue and a deep and weak pulse. impotence, spermatorrhea, watery vaginal discharge, infertility, enuresis, polyuria, wheezing, dayb…)".
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