Betula luminifera

Betula luminifera

(commonly used Chinese herbal medicine in Sichuan)

[synonym] birch bark, birch bark (commonly used Chinese herbal medicine in Sichuan).

[source] the bark of Betula luminifera. See the "bright leaf birch root" section for plant morphology.

[collection] harvest in summer and autumn.

[chemical constituents] the bark contains 0.2-0.5% volatile oil (birch oil), of which more than 97% is methyl salicylate. Birch tar can be obtained from bark and wood by dry distillation. Its main components are guaiacol, benzophenone, pyrocatechol and methanol. Birch bud oil can be extracted from tender buds with a yield of 3.5-8%. The main components of the oil are betulin and betuline.

[nature and taste] common Chinese herbal medicine in Sichuan: "mild in nature, bitter in taste. "

[functions and indications] "Sichuan commonly used Chinese herbal medicine": "dehumidification, digestion, detoxification, treatment of food stagnation, red and swollen breast carbuncle, heat toxin sores, rubella, short and red urine, chest and abdomen fullness, jaundice. "

[usage and dosage] oral administration: decoction, 0.5-1 Liang.