Gum, the name of Chinese herbal medicine. This product for the horse family animal donkey's skin dehairing and boiled into the glue block. Animal form detailed donkey meat strips. Functions: nourishing yin and tonifying blood, and stabilizing the fetus. It is used in treating blood deficiency, coughing, vomiting blood, epistaxis, hematemesis, menstrual disorders of women, disintegration, and fetal leakage.

Traits of the herb: in the form of neat rectangular lumps, usually about 8.5 centimeters long, 3.7 centimeters wide and 0.7 or 1.5 centimeters thick. The surface is brownish-black or black, smooth and glossy. Slightly transparent to light. The texture is brittle and fragile, the section is brownish black or black, smooth and glossy. Gas faint, taste slightly sweet. To color black, shiny, transparent, no fishy smell, not soft through the summer is good.

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