Pharmaceutical Latin: Cortex Eucommiae
Common English: Eucommia Bark
Herbs that Tonify the Yang
Taste Temperature Entering Meridians Dosage
Slightly Acrid
Tincture: 2-4ml
Actions Indications/Syndromes

Tonifies the Kidneys and Liver and strengthens the sinews and bones

Kidney and Liver Deficiency with a weak, sore or painful lower back and knees, fatigue and urinary frequency

Weakness of sinews and bones

Aids the smooth flow of Qi and Blood

Promotes circulation for weak sinews and bones

Calms the fetus

Deficiency Cold patterns with bleeding during pregnancy

Prevents miscarriage when the fetus is agitated or restless and when a pregnant woman has significant back pain or presents with a deficient condition

Threatened abortion

Lowers blood pressure

Dizziness and light-headedness due to Liver Yang Rising

Tonifies Kidney Yang Reproductive and urinary disorders such as impotence and incontinence
  • Contraindicated for those with Yin Deficiency Heat.
  • Contraindicated during pregnancy for those with symptoms of sinking Qi such as a dragging sensation in the abdomen and exhaustion.
  • Do not use in conjunction with herbs that raise Qi such as Rx. Astragali Huang Qi, Rz. Cimicifugae Sheng Ma or Rx. Bupleuri Chai Hu.

Rx. Dipsaci
Xu Duan
Sm. Cuscutae
Tu Si Zi
Hb. Taxilli
Sang Ji Sheng

Fr. Psoraliae
Bu Gu Zhi
Sm. Juglandis
Hu Tao Ren

Fr. Corni
Shan Zhu Yu
Sm. Cuscutae
Tu Si Zi

Lower back pain or threatened miscarriage due to deficient Kidneys.

Low back pain and wheezing due to Kidney Yang Deficiency.

Impotence and frequent urination due to Deficiency Cold of the Kidneys.

Placenta Hominis
Zi He Che
Rx. Rehmanniae
Sheng Di Huang
Rx. Achyranthis Bidentatae
Niu Xi

Ram Cinnamomi
Gui Zhi
Rx. Angelicae Pubescentis
Du Huo
Rx. Gentianae
Qin Jiao

Rx. Dipsaci
Xu Duan
Rx. Dioscoreae

Steaming bone disorder with coughing.

Damp-Cold back pain with a sore, swollen feeling and localized coldness that is exacerbated by exposure to Cold and accompanied by a deep, slow pulse and a white, greasy tongue coat.

Habitual miscarriage.

Rx. Paeoniae Alba
Bai Shao
Spica Prunellae
Xia Ku Cao

Rx. Dipsaci
Xu Duan

Cx. Acanthopanacis
Wu Jia Pi

Dizziness and light-headedness due to Rising Liver Yang.

Tonifies the Liver and Kidneys, strengthens the lower back and secures the Chong and Ren channels to treat aching in the lower back and knees, weakness of the legs which makes walking difficult and especially threatened miscarriage due to instability of the Chong and Ren channels.

Restless fetus or bleeding during pregnancy accompanied by lower back pain and a sense of dropping in the lower trunk.

Fractured or broken bones.

Eliminates pathogenic Wind, Dampness and Cold, strengthens the Liver and Kidneys to strengthen sinews and bones and treat low back and leg pain, aching of the feet and knees, restricted movement of the joints and weakness of the lower limbs due to Kidney and Liver Deficiency which allows Wind-Damp-Cold to enter.

Hypertension in patients with Liver and Kidney Deficiency.

Fr. Lycii
Gou Qi Zi

Rx. Lateralis Aconiti Preparata
Zhi Fu Zi
Cx. Cinnamomi
Rou Gui
Hb. Epimedii
Yin Yang Huo

Hb. Taxilli
Sang Ji Sheng
Rx. Angelicae Sinensis
Dang Gui
Rz. Chuanxiong
Chuan Xiong

Salt-fried and soaked grain-based liquor for low back pain.

Cold legs and an intolerance of Cold.

Low back pain during and after menstruation.

Hb. Taxilli
Sang Ji Sheng
Rx. Dipsaci
Xu Duan
Rz. Atractylodis Macrocephalae
Bai Zhu
Rx. Rehmanniae Preparata
Shu Di Huang
Rx. Paeoniae Alba
Bai Shao
Caul. Perillae
Zi Su Geng

Rx. Dipsaci
Xu Duan
Rx. Dioscoreae
Fr. Jujube
Da Zao

Charred Rx. Dipsaci
Xu Duan
Rx. Angelicae Sinensis
Dang Gui
Rx. Paeoniae Alba
Bai Shao
Colla Corii Asini
E Jiao
Fol. Artemisiae Argyi
Ai Ye

Low back pain during the first three months of pregnancy with a feeling of abdominal prolapse.

Unstable pregnancy with a restless fetus and bleeding and a history of miscarriage in the first trimester.

Continuous bleeding after miscarriage.

Fr. Corni
Shan Zhu Yu
Fr. Foeniculi
Xiao Hui Xiang
Sm. Plantaginis
Che Qian Zi



Urinary incontinence and dribbling urine.



  1. It benefits essence and marrow.
  2. It is the primary Kidney Yang tonic for treating the lower body.
  3. It is said to strengthen resolve and expel Damp itching (Damp-Heat) in the genitals.
  4. Du Zhong descends to enter the Kidneys to strengthen Kidney Qi and the sinews and bones. It governs the Qi level of the lower body to tonify the Liver and Kidneys. Niu Xi governs the Blood level of the lower body and travels in the Qi and Blood of the channels and collaterals.
  5. Dry-fried Eucommia Chao Du Zhong directly enters the Kidney channel more strongly tonifies the Liver and Kidneys and is a better anti-hypertensive.
  6. Charred Eucommia Du Zhong Tan is able to stop bleeding and is used for instability of the Chong and Ren channels leading to abnormal uterine bleeding such as long periods or bleeding during pregnancy.
  7. Eucommia Leaf Du Zhong Ye can be used effectively as a substitute for the bark in most of its clinical functions.