American ginseng (Panax quinquefolius) has long been a popular herb. Modern research confirms both American and Asian ginsengs contain ginsenosides and supports their long history of use. American ginseng is considered less yang than Asian ginseng (Panax ginseng). For this reason, Chinese herbalists valued American ginseng for regular long-term use. Native Americans in North America first used this herb in similar ways to Chinese herbalists. In the 18th century, it became popular in America, and began being exported to China. Today, a large amount of the American ginseng grown in North America is exported to Asia.