Roxb.Family: Rubiaceae.English: Pale Catechu, Gambier.Ayurvedic: Khadira (related species).Folk: Chinai Katthaa.
Action: Intestinal astringent. Uses similar to Black Catechu (Acacia catechu). The extract of the leaves and shoots contains tannins, mainly catechins up to 35% and catechu tannic acid up to 50%; indole alkaloids including gambirine, gambiridine; flavonoids such as quercetin; pigments and gambirfluorescin.
Gambirine is reported to be hypotensive; d-catechu constricts blood vessels. Catechins protect the liver from infection.A related species, U. rhynchophylla, native to China, known as Gou Teng in Chinese medicine, is used for eclampsia, headache, dizziness, convulsions, high fever and hypertension. (WHO.)