Tetradium ruticarpum (Evodia rutaecarpa) is a plant, which belongs to a genus of 9 species of trees. It is known as Euodia or Bee bee tree in the west because it was classified to the genus Euodia in the ancient literature. The volatile oil of Tetradium ruticarpum (Evodia rutaecarpa) fruits contains evodene, evodol, and limonin. Fruits contain evodiamine, rutaecarpine, evocarpine, Hydroxyevodiamine, wuchuyine, ocimene, evodione, evogin, rutaevin, aspartic acid, tryptophan, threonine, serine, cystine, and so on. The fruit of Tetradium ruticarpum which is also known as Wu zhu yu (Wu Zhu Yu) or Evodia Fruit, is used in Traditional Chinese Medicine at doses of 3-9 grams (of the berries) thrice a day for the purposes of warmth, intestinal comfort (specifically; to alleviate abdominal pain, acid regurgitation, nausea and diarrhea), dysmenorrheal, and fighting inflammation and infections. It is frequently used in a combination supplement called Wu Zhu Yu Tang, which consists of Evodia fruit with Jujube Fruit and Panax Ginseng (1:1:1 ratio) and Ginger root (twice the amount of any one other ingredient) which is a decoction used for hypertension or as Zuo jin wanwhich is used for gastrointestinal distress alongside Rhizoma Coptidis at a 1:6 ratio (Evodia:Coptidis). Another decoction exists called Fan zuo jin wan, which is Rhizome Coptidis and Evodia in the inverse ratio. Tetradium ruticarpum fruit has also being shown to possess antitumor activity.