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Eucommia

Eucommia– Eucommia is a plant in the family Eucommiaceae, a rare tree species surviving from ancient age.
– It is a deciduous tree, up to 20 meters high, 50cm in diameter, and with spherical crown. Eucommia ulmoides bark is dark gray. Branches have flaky marrow.
– So far, as many as 14 species in the entire genus Eucommia has been found all over the world. Unfortunately they have become extinct one after another on the mainland and Europe.
– Main habitat is montane forest. But now most of them are from cultivation and distributed in the middle Yangtze River, the southern provinces, Henan, Shaanxi, Gansu and other places.
– Currently the species in China is the only relict plant survived.

 

eucommia

 

Eucommia ulmoides oliv.(chi. : 杜仲)
– the dried bark of Eucommia ulmoides Oliv.. Its common names include rubber tree bark and cortex eucommiae.
– Eucommia bark, also called Du Zhong in its Chinese name, has long been used in TCM clinical practice. All parts, especially the root and leaf, of Eucommia herb are valuable.
– For the best medicinal value, Eucommia stem bark is usually harvested from April to June.
– After the peeling, it needs to scrape off the tertia, stack them together, sweat them till their endothelium become purple-brown, and then dry them in the sun.
– Eucommia ulmoides has not only a high economic value, but also a very important scientific value for the research on the system evolution of angiosperms, the flora origin in China, and so on.

 

Benefits
– It also has a gentle action in regulating the qi and blood. It is often used for kidney deficiency with symptoms of lower back pain and weakness, such as seen in chronic nephritis, chronic strain of the back, and rheumatoid arthritis.
– Jiao Shude (8) notes that eucommia is often combined with dipsacus for injuries, saying that “eucommia promotes union of separated sinews and bones, while dipsacus promotes knitting of torn sinews and broken bones; these two medicinals have a mutually complementary therapeutic effect.”
– Further, he points out that “eucommia enters the qi aspect of the kidney channel and tends to treat aching lumbus and knees; dipsacus enters the blood aspect of the kidney channel and tends to treat inhibition of the joints of the lumbus and knees with difficult moving.”
– eucommia warms the qi and dries dampness, making it most suitable for deficiency of kidney qi and invasion of cold-damp.
– This herb has varying degrees of regulation on the immune system, endocrine system, central nervous system, circulatory system and urinary systems.
– it can excite the hypothalamus-pituitary-adrenal cortex system and strengthen the adrenal function.
– Modern research also found that it works, in the same way with Dang Shen (Codonopsis) and Huang Qi (Astragalus), to support immune function.
– All these evidences confirm its old assess by the ancient Chinese wisdom – long term usage of Eucommia can help weight loss and rejuvenation.
– Its decoction can prolong the pentobarbital-induced sleeping time;
– It can inhibit the delayed-type hypersensitivity induced by DNCB;
– It can resist hydrocortisone’s immunosuppressive effects, shift the balance of cell-mediated immunity, enhance the tumor-bearing mice’s ability of increasing glycogen content, and raise blood sugar;
– All its raw, fried, and sand-scorch decoctions have significant antihypertensive effect to rabbits and dogs. But the raw one has weaker effect. And effect of the other two is almost identical and their absolute value is equal to twice of the raw version; all of them can fight against the effect of hypophysin on isolated uterus – significantly inhibit its spontaneous activity and reduce its frequency and contraction strength.
– It nourishes the Shen and yang in the body, TCM practitioners often use it for the treatment of impotence and premature ejaculation brought about by deficiency in Shen yang. The ability of the herb to increase nitric-oxide might be involved in addressing such impotency conditions.
– The herb could also be used for dealing with other health conditions brought about by deficiencies in Shen and Gan, including but not limited to conditions like premature graying of hair, blurry vision, tinnitus, poor memory, menstrual issues, as well as fertility issues in both men and women.
– In ladies, Eucommia bark has be used for supporting pregnancies, by “calming the fetus”, soothing the uterus and reducing the occurrence of miscarriages.

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