Herbal Information Center - Don Quai
From:  http://www.kcweb.com/herb/herbmain.htm
Don Quai (Angelica sinensis)
Dong quai is an aromatic herb that grows in China, Korea, and
Japan. The reputation of Don quai is second only to Ginseng and
is considered the ultimate, all-purpose woman's tonic herb. It
is used for almost every gynecological complaint from regulating
the menstrual cycle to treating menopausal symptoms caused by
hormonal changes. 
Dong quai is frequently used by the Chinese as a strengthening
treatment for the heart, spleen, liver and kidneys. Both men and
women use the herb as a general blood tonic.
Dong quai contains vitamins E, A and B12. Researchers have isolated
at least six coumarin derivatives that exert antispasmodic and
vasodilatory effects. Antispasmodics are a remedy for menstrual
cramps. The essential oil in dong quai contains Ligustilide,
butylphthalide and numerous other minor components. Ferulic acid
and various polysaccharides are also found in dong quai's root.
These elements can prevent spasms, reduce blood clotting and
relax peripheral blood vessels. Research has shown that don quai
produces a balancing effect on estrogen activity. 
Modern treatments prescribe the herb to combat PMS and to help
women resume normal menstruation after using birth control pills.
The herb has been found useful in balancing and treating many
female systems and cycles. Dong quai's constituents can act to
stimulate the central nervous system which can remedy weakness
and headaches associated with menstrual disorders. It strengthens
internal reproductive organs, helps with endometriosis and internal
bleeding or bruising. It relieves menopausal conditions such as
vaginal dryness and hot flashes. 
The herb has also been used as a blood purifier, to promote
blood circulation and nourish the blood in both sexes. It is high
in iron content and may help to prevent iron deficiency and anemia.
Studies show that it can aid in regulating blood sugar and in
lowering blood pressure.
Dong quai has a mild sedative effect which can relieve stress and
calms the nerves. It has also be used to stimulate the uterus
during childbirth, treat insomnia, alleviate constipation and for
migraine headaches. 
Parts Used:
Whole root. Found in tea, herbal preparations, capsules, extract
and recipes.
Common Use:
The root has earned a reputation as the "ultimate herb" for women.
It is used to restore balance to a woman's hormones and cycles and
is helpful in restoring menstrual regularity and for conditions of
the reproductive system. It is not recommended during pregnancy,
for women with excessive menstrual flow or for people taking blood
thinning agents.
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