Angelica sinensis, commonly known as dong quai or "female ginseng" is a herb from the family Apiaceae, indigenous to China. Angelica sinensis grows in cool high altitude mountains in China, Japan, and Korea. The yellowish brown root of the plant is harvested in fall and is a well-known Chinese medicine used over thousands of years.
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Pharmacology
Use in traditional Chinese medicine
The dried root of A. sinensis is commonly known as Chinese angelica (simplified Chinese: ??; traditional Chinese: ??; pinyin: d?nggu?; Pe?h-?e-j?: tong-kui) and is widely used in Chinese traditional medicine for women's health, cardiovascular conditions, osteoarthrosis, inflammation, headache, infections, mild anemia, fatigue and high blood pressure. The dong quai (??) means that a husband shall return back to his wife, which is implicitly said to help women's sexual health.
Dong quai is used for menopause vasomotor symptoms such as hot flashes. However, a randomized, double blind, placebo-controlled clinical trial showed that dong quai was no more effective than placebo.
Potential anti-osteoporotic effects of dong quai independent of any estrogen mechanism were evaluated in rat models which showed that the extract of A. sinensis may prevent the bone loss. However, more high quality human evidence is needed to confirm same anti-osteoporotic effects of dong quai in humans.
Dong quai contains a chemical compound called butylidenephthalide which has antispasmodic activity in vitro and might relieve dysmenorrhoea muscle cramps by relaxing the uterus muscle. However, this claim lacks evidence of effectiveness in human clinical trials.
In an animal study, Dong quai also induced hair growth via the inhibition of apoptosis signaling.
Overall, the U.S. National Library of Medicine states that more evidence is needed to rate the effectiveness of dong quai for most uses.
Adverse effects
There is evidence that A. sinensis may affect the muscles of the uterus. Women who are pregnant or planning on becoming pregnant should not use A. sinensis, because it may induce a miscarriage. Taking A. sinensis can cause skin to become extra sensitive to the sun, leading to a greater risk for skin cancer. One case of gynaecomastia has been reported following consumption of dong quai root powder pills. Large and prolonged doses of the plant is not advised as it contains compounds that are considered carcinogenic.
Drug interactions
A. sinensis may increase the anticoagulant effects of the drug warfarin (as it contains coumarins) and consequently increase the risk of bleeding.
Due to the antiplatelet and anticoagulant effects of A. sinensis, it should be taken with caution with herbs or supplements (such as ginkgo, garlic, and ginger) that may slow blood clotting to reduce the possible risk of bleeding and bruising.
Dong Quai And Menopause Video
Chemistry
The plant's chemical constituents include phytosterols, polysaccharides, ligustilit, b-butyl phtalit, cnidilit, isoenidilit, p-cymen, ferulate, and flavonoids. When isolated from the plant, one of the chemicals, angelica polysaccharide sulfate, has in vitro antioxidant activity.
Source of the article : Wikipedia
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