Eucommia Bark – 1 lb (454 g)

Eucommia Bark, known in Chinese as 杜仲 (Dùzhòng) and scientifically as Cortex Eucommiae, is a valued herb in traditional Chinese medicine (TCM). This TCM herb has been traditionally used to support natural wellness, maintain vitality, and encourage holistic balance. At TCMforyou.com, we provide premium-quality Eucommia Bark carefully sourced to preserve its therapeutic properties.

As a herbal supplement, Eucommia Bark helps promote overall well-being and supports natural energy, immunity, and balance. Integrating this herb into your wellness routine offers a gentle, time-tested approach to enhancing daily health. Whether brewed as tea, added to herbal remedies, or taken as part of a TCM formula, Eucommia Bark provides a safe, natural way to experience the benefits of traditional Chinese medicine.

Trusted for centuries, Eucommia Bark has been used in TCM to harmonize the body and encourage optimal functioning of key systems. At TCMforyou, we prioritize authenticity and quality. Each batch undergoes rigorous testing to ensure purity and potency, delivering an herbal product aligned with traditional practices.

Experience the natural support of Eucommia Bark, promoting immune health, vitality, and holistic well-being. Embrace the wisdom of TCM and incorporate this gentle, effective herbal remedy into your daily wellness journey.

[Overview] This herb is also known as Sixian, Sizhong, Chesipi, and Silianpi. It is the bark of Eucommia ulmoides Oliv., a plant of the Eucommiaceae family. It is mainly produced in Guizhou, Sichuan, Henan, Shaanxi, Gansu, and Hubei provinces, with Sichuan and Guizhou having the largest output and best quality. The bark is harvested from April to June, the rough outer bark is scraped off, then it is piled to “sweat” until the inner bark turns purplish-brown, and then sun-dried.

[Properties] Sweet in taste, warm in nature. Enters the Liver and Kidney channels.

[Actions] Tonifies the Liver and Kidney, strengthens sinews and bones, calms the fetus.

[Applications]
1. Used for lumbar and leg pain, especially kidney deficiency lower back pain. For soreness and weakness of the lower back and knees due to Liver and Kidney deficiency with limpness of the lower limbs, often combined with Psoralea (Buguzhi) and Walnut kernel (Hutao rou), as in Qing’e Wan (青娥丸). For chronic wind-cold-damp Bi syndrome with Liver and Kidney deficiency, joint pain, and difficulty in flexion and extension, often combined with Angelica pubescens (Duhuo), Gentiana macrophylla (Qinjiao), Angelica sinensis (Danggui), as in Duhuo Jisheng Tang (独活寄生汤). For traumatic lumbar pain, can be combined with Ligusticum chuanxiong (Chuanxiong), Salvia miltiorrhiza (Danshen), and Carthamus tinctorius (Honghua).
2. Used for kidney yang deficiency and insufficiency of essence and blood causing impotence, frequent urination, and dribbling urine; can be combined with Cervi Cornu Pantotrichum (Xulu jiao), Aconite (Fuzi), Cinnamon (Rougui), Rehmannia glutinosa prepared (Shudi huang), Angelica sinensis (Danggui), and Lycium fruit (Gouqizi), as in Yougui Wan (右归丸).
3. Used for Liver and Kidney deficiency and coldness of the lower origin causing threatened miscarriage, restless fetus, or habitual miscarriage; often combined with Taxillus (Sangjisheng), Dipsacus (Xuduan), Cuscuta (Tusizi), and donkey-hide gelatin (Ejiao). For restless fetus, it can be ground into powder and made into pills with jujube paste, as in Duzhong Wan (杜仲丸); for habitual miscarriage, it can be combined with Dipsacus and Chinese yam (Shanyao).
Additionally, this herb has antihypertensive effects and can be used for hypertension. For elderly patients with kidney deficiency and high blood pressure, it can be combined with Epimedium (Yinyanghuo), Taxillus (Sangjisheng), and Achyranthes (Huainiu xi); if Liver yang or Liver fire is excessive, it can be combined with Prunella (Xiakucao), Chrysanthemum (Juhua), and Scutellaria (Huangqin).

[Dosage and Administration] Internal use: decoction, 10–15 g; or used in pills, powders, or infused in wine.

[Cautions] This herb is warm in nature; it is contraindicated in cases of Yin deficiency with fire excess.

[Modern Research]
1. Chemical constituents include Eucommia gum, Eucommioside, Eucommiol, phenols, chlorogenic acid and other organic acids, fats, flavonoids, aldehydes, tannins, etc. It also contains amino acids such as arginine, histidine, glutamic acid, cystine, and 15 inorganic elements including germanium and selenium. Trace amounts of alkaloids and vitamin C are also present.
2. Pharmacological effects: Eucommia aqueous, alcoholic, and ether extracts, as well as purified sugars, alkaloids, cornoside (from peach leaf coral), and chlorogenic acid, all exhibit varying degrees of antihypertensive effects. Sand-roasted and charred Eucommia have better antihypertensive effects than raw Eucommia. Eucommia reduces cholesterol absorption and significantly increases liver glycogen content in mice. The decoction dilates blood vessels. It modulates cellular immunity but has little effect on humoral immunity. It weakens spontaneous uterine contractions in vitro and antagonizes uterine contractants (acetylcholine, oxytocin), thus producing an antispasmodic effect. It stimulates the hypothalamic-pituitary-adrenal axis and also has sedative, analgesic, anti-stress, diuretic, and anti-aging effects.
3. Clinical reports on hypertension: Eucommia bark slices (each containing 4.9 g raw herb), 1 slice per dose, 3 times daily; leaf slices (each containing 2 g raw herb), 2 slices per dose, 3 times daily. Taken continuously for 100 days. A total of 102 cases of hypertension were treated, with a total effective rate of 76.4% for bark slices and 78.7% for leaf slices. [Shaanxi Journal of Traditional Chinese Medicine, 1980, (4):23]