Sophora japonica (scientific name: Styphnolobium japonicum) is a large tree of the genus Sophora, native to China, and also known as Sophora japonica and Sophora japonica in order to distinguish it from Robinia pseudoacacia (Robinia pseudoacacia), which is native to North America. The acacia tree is tall, light-loving, deep-rooted, and fast-growing. Its pinnately compound leaves are similar to those of the acacia, but the acacia's leaves are slightly transparent. The flowers of the acacia tree are yellowish and can be cooked and eaten, and the flower buds are commonly known as "acacia rice" and can also be used as a traditional Chinese medicine or dye.
Quercetin has a good expectorant, cough, and has a certain asthma effect, used in the treatment of chronic bronchitis. In addition there are also lower blood pressure, enhance capillary resistance, reduce capillary fragility, lowering blood lipids, dilate coronary arteries, increase coronary blood flow, etc., on coronary heart disease and hypertension patients with adjuvant therapeutic effects
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