Catechu is a kind of Chinese medicinal material, and it appears only a handful of times in our daily life, but we should also have a comprehensive understanding of it. It is also known as Haiercha, Black Catechu, Wudi Mud, and it is a legume leaf. A dry paste made from the decoction of the heartwood fragments of the branches and stems of the arborescens tree. It is distributed in southern Yunnan and cultivated in Hainan. The branches and stems are harvested in winter, the outer skin is removed, cut into large pieces, boiled in water, concentrated, and dried. It removes impurities and breaks when used. It has the effects of invigorating blood and relieving pain, stopping bleeding, regenerating muscles, dampening sores, clearing lungs and resolving phlegm. Sores, lung heat, cough, do you know what catechu is?
The catechu cream is in irregular lumps and varies in size. The surface is black or brown, smooth and slightly shiny, sometimes cracks can be seen, brittle, fragile, broken and irregular, brown-red, with pores, and shiny. No gas, astringent taste, bitter first then sweet (Yunnan products: sometimes rough, dull, astringent). It is better to have black, slightly reddish, shiny and not burnt. Fang catechu has a square shape with a diameter of about 2 cm, with a slight depression in the center. The surface is brown to dark brown. No gas, astringent taste. The fire is bubbling and fragrant. Due to different processing methods, Fang Catechu is divided into two kinds of products: Laoer Tiao and Xin Catechu. Lao catechu is dark brown, often sticky, and thick in cross-section. The new catechu is brown, non-adhesive, and thin in cross-section. It is customary to think that the old catechu is better than the new catechu. Taste bitter, astringent, flat in nature, enter the lung meridian.
It is a deciduous tree with a height of 6 to 13 meters. Branchlets are thin, with spines. The leaves are even-numbered two pinnately compound leaves, alternate. The racemes are axillary, with yellow or white flowers. The bark is brown or gray-brown, often showing strips of flakes cracking, not falling off. The pods are flat and thin, purple-brown, shiny, and have 7 to 8 seeds. The flowering period is from August to September, and the fruit ripening period is from February to March.
It clears away heat, produces fluid, and resolves phlegm. Externally used to relieve pain, astringent and stop bleeding, treat damp sores, malnutrition, aphtha, chancre, hemorrhoids and other symptoms, orally treat phlegm-heat, cough, and thirst. For the treatment of rhinitis, sinusitis, catechu powder can be used to blow the nose. It is used to treat stomatitis and clear laryngitis. Can use 6g catechin, 9g silver flower, 9g forsythia, decoction and gargle, for the treatment of epistaxis and hemorrhoid bleeding. It can be applied externally with catechin powder, or with catechu 7.5g powder, cinnamon 1.5g powder, 24g boiling water, soak for half an hour and filter, wash the hemorrhoids, or use cotton soak syrup as nostril compression to stop bleeding, for the treatment of traumatic bleeding.
The effect and effect of powdered catechu or notoginseng can be used for external application and pressure bandaging to stop bleeding. For bleeding and increased secretions on the ulcer door wound, wash with catechu decoction or wet compress to stop bleeding and relieve pain. Bed sore secretions are too much, and the mouth is not closed for a long time. Use catechin powder or decoction for external washing, which has astringent and muscle-generating effect. It is used to treat excessive leucorrhea. 9g of catechin, 15g of Cnidium, decoction for washing and injecting medicine, to treat skin eczema, ulcers, and long secretions, catechu with light powder, borneol, keel, calamine, etc., can be used for external application.