Gastrodin is extracted from the dry root of the orchid plant, Gastrodia elata. The
source of raw materials is Yunnan Province. Traditional Chinese medicine Gastrodia
elata (Gastrodia elata Bl.) is also known as Chi Jian, Ding Feng Cao, Shui Yang Yu,
and so on, belonging to special symbiosis perennial herb of Orchidaceae and
Armillaria mellea. The medicinal part is its tubers. It has sweet flavor and liver
channel tropism and is neutral in nature. Traditional Chinese medicine believes that
its main functions are to expel wind and relieve convulsion, calm the liver and suppress liver-yang, and expel wind evil and channel. There are 23 chemical ingredients extracted from Gastrodia elata, including gastrodin, gastrodia glycosides,
vanilla alcohol, vanilla aldehyde, beta steroid valley alcohol, p-hydroxybenzoic
acid, carrot glycosides, and so on, among which the highest content of single active
ingredient is Gastrodia glycosides, namely, gastrodin
