Du Zhong Ye
Eucommia ulmoides Oliv.
☯ TCM Properties
Nourishes Liver and Kidney Yin; Strengthens the Sinews and Bones; Lowers Blood Pressure
Western Herbalism Properties
Botanical Description
Eucommia ulmoides (Eucommiaceae) is a small to medium deciduous tree 10-20 m tall, the sole surviving species of an ancient monotypic family endemic to central China. The trunk has greyish, longitudinally fissured bark, and broken twigs, leaves, and bark exude characteristic silvery latex threads (gutta-percha rubber) that connect the broken halves. Leaves are alternate, elliptic to ovate, 6-16 cm long, with serrate margins and pinnate venation, turning yellow before autumn drop. The species is dioecious; small apetalous flowers appear before the leaves, followed by flattened, winged, single-seeded samaras 3-4 cm long. The leaves (Du Zhong Ye), distinguished from the more famous bark (Du Zhong), are harvested in summer and dried. (Sources: POWO; Wikipedia; PFAF)
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 9-30g | Daily | — | — | — |
Cultural & Historical Context
Traditional Chinese Uses
Du Zhong Ye (eucommia leaf) shares many tonic properties with the bark (Du Zhong) but in a lighter, more accessible form. It tonifies the Liver and Kidney, strengthens the sinew and bones, and lowers blood pressure. Used for lower back and knee weakness, joint pain, fatigue from Liver-Kidney deficiency, and hypertension with Liver Yang rising, it provides a gentle alternative to the bark in formulas where a milder tonic action is needed or where the leaf is being used as a daily health supplement tea.
Traditional American Uses
None Documented
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.