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American ginseng
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American ginseng : ウィキペディア英語版
American ginseng

American ginseng (''Panax quinquefolius'') is a herbaceous perennial plant in the ivy family, commonly used as Chinese or herbal medicine. An extract is sold as Cold-fX. It is native to eastern North America, though it is also cultivated in places such as China.〔(【引用サイトリンク】 Panax quinquefolius )
The plant's forked root and leaves were traditionally used for medicinal purposes by Native Americans. Since the 18th century, the roots have been collected by "''sang'' hunters" and sold to Chinese or Hong Kong traders, who often pay very high prices for particularly old wild roots.〔(There is More to a Forest than Trees ). research.vt.edu (Summer 2002)〕 It is also known by its Chinese name ''huaqishen'' () or ''xiyangshen'' ().
==Medical uses==
Health Canada's Natural Health Product Directorate states that extracts from American ginseng "help reduce the frequency, severity and duration of cold and flu symptoms by boosting the immune system".〔http://webprod3.hc-sc.gc.ca/lnhpd-bdpsnh/info.do?lang=eng&licence=80002849〕
Some manufacturer-sponsored trials suggest that extracts from American ginseng, when used preventively, may have favorable effects on elderly patients against common cold. However, the results of these trials are inconsistent, and the trials of substandard quality. There is ''no'' scientific evidence showing that American ginseng is effective in treating those who are already infected with the common cold.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「American ginseng」の詳細全文を読む



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