What is Du Zhong?
Du Zhong (scientific name
Eucommia ulmoides Oliver), also known as
Eucommia Bark or
Cortex Eucommia, the name of Chinese herbal medicine. Also known as bakelite, it is a plant of the genus Eucommia in the family Eucommia. The height of the tree can reach 20 meters, and the diameter at breast height is about 50 cm. Functions and indications are: nourishing liver and kidney, strengthening bones and muscles, and preventing miscarriage. Treat waist and spine pain, flaccidity and weakness of feet and knees, urination, vaginal dampness and itching, fetal leakage, restless fetal movement, and high blood pressure.
Eucommia Bark
Eucommia Bark is sweet, warm and tonic, enters the liver and kidney channels, and has strong medicinal power. It is good at warming and tonifying the liver and kidney, strengthens tendons and bones, prevents miscarriage, and lowers blood pressure. It is not only an important medicine for treating kidney deficiency, soreness of the waist and knees or weakness of muscles and bones, but also a good product for treating fetal leakage or fetal movement due to liver and kidney deficiency.
Growth environment of Du Zhong
Duzhong likes a warm and humid climate and a sunny environment. It can tolerate severe cold. Adult plants can survive normally at -30°C. It can be cultivated in most areas of my country and has strong adaptability. There is no strict selection of soil, but the soil layer Deep, loose, fertile, moist, well-drained loam soil is most suitable. The growth rate of Eucommia ulmoides is relatively slow in its infancy, and the fast-growing period occurs in 7-20 years. After 20 years, the growth rate decreases year by year. After 50 years, the growth of the tree height basically stops, and the plants naturally wither. It mostly grows in low mountains, valleys or low slope forests at an altitude of 300-500 meters. The selection of soil is not strict, and it can grow on barren red soil or rocky cliffs.
Duzhong is endemic to China. Distributed in Gansu, Shaanxi, Henan (Xichuan), Sichuan, Hubei, Yunnan, Anhui, Guizhou, Hunan, Shaanxi, Guangxi, Jiangxi and Zhejiang provinces, it is now widely planted in various places. The hometown of Eucommia ulmoides in Zhangjiajie, the world's largest producer of wild eucommia ulmoides, is now a large number of artificially cultivated eucommia in Jiangsu National Forestry Base. Eucommia ulmoides has also been introduced to botanical gardens in Europe and America. It is called "Chinese rubber tree", although it has no relationship with rubber trees.
Processing methods of Du Zhong
Collection and processing
In order to protect resources, the local peeling method is generally adopted. From Qingming to summer solstice, select plants that have grown for more than 15 to 20 years, peel off the bark, scrape off the rough bark, and dry in the sun according to the size of the medicinal materials. Store in a ventilated and dry place.
Processing method
Du Zhong
Take the raw medicinal materials, remove impurities, scrape off the remaining rough skin, wash, cut into pieces or shreds, and dry.
Salt Du Zhong
Take Du Zhong pieces or shreds, add salt water, mix well, moisten, stir-fry over medium heat until the shreds are broken, and when the surface is burnt black, take it out, let it air out in time, and cool thoroughly. For every 100kg of Du Zhong, use 2kg of salt.
Du Zhong TCM
Medicine part
The dry bark of Eucommia ulmoides Oliver.
Taste
Sweet slightly pungent, warm.
Tropism
Return liver, kidney channel.
Effect
Invigorating the liver and kidney, strengthening bones and muscles, and preventing miscarriage.
Attending
Treat waist and spine pain, flaccidity and weakness of feet and knees, urination, vaginal dampness and itching, fetal leakage, restless fetal movement, and high blood pressure.
Medicinal properties
Dry bark, in the form of flat plates or rolls, with different sizes and thicknesses, generally about 3-10 mm thick and 40-100 cm long. The outer surface is greyish-brown, rough, with irregular longitudinal fissures and rhomboidal transverse lenticels, and sometimes light gray lichen spots can be seen. However, most of the products have been peeled off part of the rough skin, so the outer surface is light brown and smoother. The inner surface is smooth, dark purple. Brittle and easy to break, the section is connected by silver-white filaments, dense and slightly stretchable. Slight gas, slightly bitter taste, chewing gum-like residue. The skin is thick and large, the rough skin is scraped clean, the outer surface is yellowish brown, the inner surface is dark brown and smooth, and the one with more white silk when broken is better. Those with thin skin, few cross-section threads or thick skin with rough skin are inferior in quality.
Dosage
Oral administration: decoction, 3-5 qian; soak in wine or into pills or powder.
Precautions
People with deficiency of yin and hyperactivity of fire should take it with caution.
① "Compendium of Materia Medica": Evil snake skin, element ginseng. ②"Materia Medica Classics": It is not suitable for people with kidney deficiency and flaming fire. That is to say, it should be used together with Cortex Phellodendri and Anemarrhena. ③ "Departing Materia Medica": internal heat. Both essence and blood dryness are contraindicated.
Du Zhong benefits
Du Zhong is the dry bark of Eucommia ulmoides, this product belongs to the liver and kidney meridian, sweet in taste and warm in nature. Du Zhong has the effects of invigorating the liver and kidney, strengthening bones and muscles, and preventing miscarriage.
Invigorate the liver and kidney
Du Zhong can be used for kidney deficiency, low back pain, weakness of muscles and bones, dizziness and other symptoms due to insufficient liver and kidney. This product is sweet and warm, enters the liver and kidney channels, and is good at nourishing the liver and kidney. It can treat both the symptoms and root causes of kidney deficiency and low back pain. It is often compatible with walnut meat and psoralen; it can be used with Combination of deer antler, dogwood, dodder, etc. can enhance the effect of warming and tonifying kidney yang.
Strengthen muscles and bones
Du Zhong and Radix Wujiapi are used together, which can not only strengthen muscles and bones but also dispel wind-dampness. Soreness, unfavorable joints, weakness of both lower limbs, etc.
Anti-fetus
Du Zhong and psoraleae are used together, warming and tonifying kidney yang, strengthening spleen and liver, not only astringent and lowering the yuan, but also strengthening the kidney, and can also be used for fetal restlessness due to liver and kidney insufficiency.
Du Zhong side effects
Duzhong is a common traditional Chinese medicine in traditional Chinese medicine. When used correctly, it can be used to treat diseases such as liver and kidney insufficiency, insufficiency of essence and blood, and weak Chong Ren. It has milder efficacy and fewer side effects. Generally, patients will not have obvious side effects if they take it in an appropriate amount according to the doctor's advice, but overdose or inconsistent syndromes may also cause certain side effects on the human body, such as chest and hypochondrium pain, dizziness, lethargy, and spleen and stomach discomfort.
Chest and hypochondriac pain
Du Zhong can affect the human heart. Taking a large amount can easily cause patients to slow down their breathing and pulse, and symptoms such as qi and blood disturbance, palpitation, and palpitations may occur.
Dizziness and drowsiness
Since Du Zhong can affect the blood flow rate, overdose may cause vertigo, and patients are more likely to experience dizziness, headache, fatigue, lack of energy, drowsiness, belching and other symptoms, and a few severe cases may appear coma.
Spleen and stomach discomfort
Blindly taking a large amount of Du Zhong may have a negative impact on the gastrointestinal function during the digestion process. Some patients are prone to stomach distension, stomach pain, nausea, belching, indigestion and other discomfort symptoms.
Getting angry
Du Zhong itself belongs to the traditional Chinese medicine of warming and tonifying qi. If taken for a long time or in large quantities, red eyes, swelling and pain, mouth sores and other discomfort symptoms may occur. In addition, it is not recommended for patients with real symptoms, fever, yin deficiency and hyperactivity of fire, as it may cause excessive internal heat due to excessive nourishment.
It is recommended to be diagnosed by a professional physician before deciding whether to use Du Zhong, and not to take it at will, so as to avoid inappropriate medicine or inaccurate dosage, which is not conducive to the improvement of discomfort symptoms, and may also aggravate the condition.
How to take Du Zhong?
Decoction
Du Zhong is usually added to decoction and taken in decoction. When Du Zhong decoction is taken orally, the usual dosage is 10-15g.
Make tea
Du Zhong Tea is a healthy drink made from the leaves of Du Zhong through traditional tea processing and Chinese herbal medicine processing methods. The taste is slightly bitter and sweet. Regular drinking is beneficial to health, and drinking a cup before going to bed has high health value, without any side effects, and is convenient to drink.
5-15 grams of Eucommia tea, brewed in boiling water at about 85 degrees, preferably with 500 ml of water, cover and soak for 5 minutes.
Health care amount: 15-25 grams/day; treatment amount: more than 30 grams/day
Du Zhong Tea benefits
1. Du Zhong Tea can regulate blood pressure, restore blood vessel elasticity, and protect the heart and brain.
2. Du Zhong Tea can protect liver and kidney, reduce blood pressure and fat, relieve diuresis
Made into powder or pill
Du Zhong Baji Bu Wan
Main raw materials: Rehmannia glutinosa, Du Zhong, cinnamon, epimedium, Yizhiren, ginseng, Morinda officinalis, Cordyceps sinensis, Gecko.
Du Zhong Baji Benefits
Invigorate qi and blood, solidify vitality, soothe the nerves and improve intelligence. Sick and weak phlegm, insomnia and night sweats.
Sparkling wine
Du Zhong wine
Drinking Du Zhong wine can nourish the liver and kidney.
How to choose Du Zhong?
Dryness
Good-quality Du Zhong is dry, mainly in the form of plates or rolls, with different sizes and thicknesses. If the Du Zhong is sticky or wet, it is not recommended to choose it. Such Du Zhong is easy to deteriorate.
Color
The surface of good Du Zhong is gray-brown, rough, with irregular longitudinal crack grooves and oblique square transverse crack lenticels, and the color of bad Du Zhong will be black.
Cross-section
Good-quality Du Zhong is crisp and easy to break, and the cross-section is connected by silver-white filaments.
Smell
Good-quality Du Zhong smells fragrant but has a bitter taste.
How to buy Du Zhong?
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