What is Chinese herb Ba Ji Tian (Morinda Root) used for

What is Ba Ji Tian(Morinda Root)?
In the West it refers to the root of Morinda Officinalis, which grows in Fujian, Sicuan, Guangdong, Hainan and Guangxi provinces in south China. It belongs to the family of Rubiaceae and the plant can be spotted mostly in river sides, mountains, and forests etc. And now most of them are grown for medicinal purpose in China.

As one of lianoid shrubs, it has succulent cylindrical tubers, normally in irregular shape. The stem is with small vertical ridge, hirsute when young. The size of oval leaves is from 3 to 13cm long and 1.5 to 5cm wide. It is capitate, 2 to 10 flowered, fleshy corolla white, and up to 7mm long sometimes. The drupe is subglobose, 6 to 11mm in diameter, 3-to-6 locular, and red when mature.

What is it used for?
It is acrid, sweet and warm in nature and goes to liver and kidney meridians. Main clinical use and indications are impotence, spermatorrhea, and premature ejaculation due to deficiency of the kidney, lower abdominal cold pain, urinary incontinence, female infertility due to cold uterus, pain and numbness because of wind-cold, soreness and weakness of low back and knee, and rheumatism etc.

The usual dosage is from 8 to 12 grams.