tonifying
Eucommia Bark
杜仲 · Dùzhòng
Eucommia ulmoides
性味
Warm
味
Sweet
Meridian
Liver, Kidney
Du Zhong is the only species in its family — a living fossil tree whose bark, when snapped, reveals silken latex threads. It is the premier herb for strengthening the lower back and knees by tonifying liver and kidney yang, and the traditional remedy for pregnancy-related lumbar soreness and unstable fetus.
🌿 功效
- •Tonifies liver and kidney yang
- •Strengthens sinews and bones
- •Calms the fetus and stops leaking (traditional)
- •Supports healthy blood pressure (research)
📖 用法用量
9–15 g in decoction; stir-fried with salt (yan du zhong) directs its action to the kidneys.
🔬 现代研究
Eucommia lignans (pinoresinol diglucoside) and chlorogenic acid are actively researched for blood-pressure regulation, bone density, and connective-tissue support.
⚠️ 禁忌
Avoid in yin-deficiency heat patterns.
