Ginseng is a good item as a gift, especially for elderly people.
Most American ginseng are produced in Wisconsin. There is also the long/thin/white type of ginseng that are grown out of Ontario Canada, but they are cheaper, almost half price that of the American Wisconsin ginseng. The medical effect of them also not that effective compared to American ginseng.
The following brands are very good when you consider buying Ginseng.
Ginseng at Amazon.com
You can buy Ginseng root, Ginseng extract and also Ginseng teas.
USA Hsu's Ginseng Enterprise Inc.
The packaging is good, there are also quite global branches specialty Hsu's stores in China too.
DailyVita
Their President Ginseng brand is good, also pretty cheap.
Other than these brands above, there are also Schumacher's Wisconsin Ginseng, Imberger Ginseng Farm Ginseng. They are of good quality too.