Gastrodia Root (Whole Tuber) - ?? Tianma 454g/ Box This Gastrodia Tuber is cultivated in Zhaotong, a city in Yunnan province. Zhaotong is the main region in China where Gastrodia is found. It is known for its superior strains of gastrodia. In Traditional Chinese Medicine, Gastrodia tuber is an herb that Subdues the liver and suppresses liver Yang rising; extinguishes liver wind, relieves convulsions; eliminates wind-damp; relieves pain. This has applications for use for anticonvulsants, invigorating the brain. anti-aging, sedation, sleep, anti-inflammatory, enhance immunity, lower blood pressure and other pharmacological health care function