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.)
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