Tree barks and root barksTonifyingEucommiae Cortex

Yan Du Zhong (Salt-processed Eucommia Bark)

鹽杜仲 · Yan Du Zhong

Tonifying herb in Traditional Chinese Medicine. Traditional functions: Supplements liver and kidney, strengthens bones and sinews, calms the fetus.

Quick Facts

Latin NameEucommiae Cortex
Chinese Name & Pinyin鹽杜仲 · Yan Du Zhong
Medicinal PartTree barks and root barks
Efficacy CategoryTonifying
Botanical OriginThe dried bark of Eucommia ulmoides Oliv. (Eucommiaceae), processed with saltwater.
Nature & FlavourSweet; Warm
Channels EnteredLiver, Kidney

What Is Yan Du Zhong?

Yan Du Zhong (Salt-processed Eucommia Bark) is a medicinal herb of Traditional Chinese Medicine.

Primarily produced in Guizhou, Sichuan, Yunnan, Shaanxi, Hubei, Henan.

Nature & Flavour: Sweet; Warm
Channels Entered: Liver, Kidney

Yan Du Zhong: Materia Medica Profile

Identification & Quality Standard

Eucommiae Cortex

Botanical Origin

The dried bark of Eucommia ulmoides Oliv. (Eucommiaceae), processed with saltwater.

Production Regions

Primarily produced in Guizhou, Sichuan, Yunnan, Shaanxi, Hubei, Henan.

Quality Requirements

Superior is thick, large, broken with many white fibers.

Macroscopic Features

Flat plate or丝状. After salt processing, surface is dark brown. Broken surface has silver-white elastic fibers. Salty taste.

Traditional TCM Properties

Sweet; WarmLiverKidney

Traditional Functions

Supplements liver and kidney, strengthens bones and sinews, calms the fetus.

How Yan Du Zhong Is Used in TCM

In the Chinese materia medica, Yan Du Zhong is classified among the Tonifying herbs.

Medical Disclaimer — This article is provided for educational purposes only and describes traditional Chinese medicine concepts. It is not medical advice, and it is not intended to diagnose, treat, cure or prevent any disease. Always consult a qualified practitioner before using any herb, particularly if you are pregnant, nursing, taking medication or managing a diagnosed condition.

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