Eucommia Bark
The primary TCM herb for strengthening the lower back and bones.
Also known as: Eucommia ulmoides • Du Zhong
Overview
Eucommia Bark, or Du Zhong, is a revered tonic herb in Chinese medicine for fortifying the Kidneys and Liver. It is specifically used to strengthen the sinews and bones, making it the go-to herb for lower back pain, knee weakness, and preventing osteoporosis. It also has a secondary function of calming the fetus and lowering high blood pressure.
Key Benefits
Supports Joint and Bone Health
Its primary use is to tonify the Kidney Yang, which in TCM governs the health of the bones and lower back. It is excellent for chronic pain and weakness in the lumbar region and knees.
Lowers Blood Pressure
Modern research has confirmed its traditional use for hypertension. It is one of the most common herbs used in TCM for managing high blood pressure.
Prevents Miscarriage
It is used to calm restless fetus and prevent bleeding during pregnancy, especially when associated with Kidney deficiency.
Promotes Sinew Strength
By nourishing the Liver and Kidneys, it strengthens the ligaments and tendons.
Dosage & How to Take
The standard dose is 9-15 grams per day in a decoction. For hypertension, it may be used in higher doses.
| Purpose | Dose | Notes |
|---|---|---|
| Lower Back/Knee Pain | 10-15g per day | Best when stir-fried with salt to guide it to the Kidney channel. |
| Hypertension | 15-30g per day | Often used as a standalone herb or in a simple formula for this purpose. |
Best Time to Take
Consistent daily use is key. Can be taken anytime.
With or Without Food
Can be taken with or without food.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Dried Bark Slices | Good | Decoctions, tinctures | When broken, the bark shows silky, rubber-like threads. Salt-frying (Yan Du Zhong) enhances its Kidney-tonifying action. |
| Extract Powder | High | Capsules, tablets | Allows for a concentrated, easy-to-take dose, especially for blood pressure management. |
Side Effects & Safety
Common
- Very well-tolerated. No significant side effects reported.
Rare
- Occasional mild dizziness in sensitive individuals, especially at high doses.
Contraindications
- Use with caution in cases of Yin deficiency with fire, as it is a warming Yang tonic.
Interactions
May have an additive effect, potentially lowering blood pressure too much. Monitor blood pressure closely.
Scientific Research
Eucommia ulmoides Oliv.: A review of its traditional uses, phytochemistry and pharmacology
The bark contains lignans, iridoids, and flavonoids that contribute to its antihypertensive, anti-inflammatory, and osteoprotective effects.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.