The largest variety and quantity of traditional Chinese medicine is Chinese herbal medicine, that is, plant medicine, which will be classified according to the types of plants, such as ordinary herbs and some relatively tall arbor plants, and catechu is one of them. So, what are the specific effects and functions of General Catechu?

Chinese medicine catechu ercha

Alias children's tea, Xixi, catechu paste and black catechu.

English name Catechu

Peeled branches and dried decoction of Leguminosae catechu.

Deciduous trees in plant form. 6 ~ 13m high. Bark is brown, strip-shaped, thin, peeling without shedding. 2 even-numbered pinnate compound leaves, alternate, 4 ~ 20cm long, with gray hairs on leaf axis, 10 ~ 20 pairs of feathers, 2 ~ 4cm long, each with 20 ~ 50 pairs of lobules, linear lobules, 3 ~ 6mm long, and sparse hairs on both sides. Racemes axillary, calyx tubular, apex 5-lobed, with sparse hairs, petals 5, yellow or white, 2 ~ 3 times that of calyx. Stamens are numerous, protruding beyond the corolla; Pistil 1, ovary superior, rectangular. The pods are flat and thin, purple-brown and shiny. Flowering from August to September, fruiting period 10- 1 1.

The distribution of origin is mostly near villages, roadsides, or used for farming. Mainly distributed in Xishuangbanna, Yunnan, and now cultivated in Guangdong, Guangxi and Fujian.

During harvesting, branches and stems of catechu are generally collected from February 65438 to March of the following year, peeled, heartwood cut into pieces, boiled in water, filtered, the filtrate is concentrated into syrup, cooled slightly, and poured into a special model to dry in the shade.

The medicinal materials are square or irregular, with different sizes. The surface is brown or dark brown, smooth and slightly shiny. Hard, fragile, irregular cross-section, shiny, porous, sticky when wet. Odorless, astringent and bitter, slightly sweet.

The taste is slightly cold and bitter. Return to lung meridian and heart meridian.

Efficacy and function: eliminating dampness and promoting granulation, healing sores and stopping bleeding. Belonging to the category of astringent hemostatics.

The clinical dosage is 1 ~ 3g, and it is decocted by package, taking more pills. Appropriate amount for external use, grinding, spraying or application. Can be used for treating ulcer, eczema, aphtha, traumatic injury and hemorrhage.

Pharmacological research has the functions of protecting liver and gallbladder, regulating immune system, resisting pathogenic microorganisms, lowering blood sugar, inhibiting gastrointestinal motility and resisting diarrhea. Anti-platelet aggregation and thrombosis, reducing serum cholesterol content, reducing tissue oxygen consumption, especially myocardial oxygen consumption, lowering blood pressure and regulating cardiovascular system function; Catechu has certain analgesic, anti-radiation, leukocytosis and anti-tumor effects, because it can inhibit the adhesion of tumor cells to fibrin and prevent the spread of tumor cells. Pharmacological experiments show that the aqueous solution can inhibit the peristalsis of duodenum and small intestine in rabbits, and promote the reverse peristalsis of cecum, thus having antidiarrheal effect. The decoction has inhibitory effects on Staphylococcus aureus, diphtheria, Proteus, Shigella flexneri and Salmonella typhi, and also has inhibitory effects on common pathogenic dermatophytes.

The chemical components include catechin, epicatechin, catechin, mucus, fatty oil, gum, wax, catechin, rhynchophylline, dihydrokonanin, dextro-affinitine, dihydrokaempferol, dimeric proanthocyanidins, levo-catechuic essence, racemic catechuic essence and catechu red.

Cold and dampness are prohibited.

Compatibility prescription

① Treatment of chancre and aphtha: children's tea, borax, etc. A that is applied to the end. (summary)

② Treatment of rickets: children's tea, realgar, Fritillaria, etc. Finally, I will wash it and put it on. ("Outline" is quoted from "Experience of Jidetang")

(3) Treating nasal deep water: children's tea powder is blown. (Compendium quoted from Compendium of Materia Medica)

(4) Treatment of vulvar sores: 3g of baby tea, 0.3g of pearl and 0.15g of sliced brain. Last application. ("Outline" quoted "Compilation of Wonderful Recipes")

⑤ Treatment of hemorrhoids: Calomelas, Borneolum Syntheticum, and Xiaoer Tea are all in the same amount, and 10 times of sesame oil is mixed into emulsion. The bottle is reserved. When in use, dip the medicine with absorbent cotton stick and put it into anal canal. [Heilongjiang Medicine 1972, (2): light ice emulsion]

⑥ Cough treatment: catechu 60g, asarum 12g, pig bile 1. The first two herbs were grinded together, and bile was refined. These three herbs are pills, each weighing 3 grams. Take 1 pill four times a day on an empty stomach. (Selected materials of the National Exhibition of New Medical Methods of Chinese Herbal Medicine)

⑦ For eczema and ulcer, there are many secretions: 9 grams of catechu, 6 grams of calomel, 0.9 grams of borneol and 9 grams of keel. Grinding into powder, mixing with water, and externally applying. ("Clinical Application of Traditional Chinese Medicine" Qing Er Powder)

Tips for decocting drugs

(1) First of all, home appliances are very important. Metal pots such as iron pots are generally not accepted, because many molecules with efficacy may react with metals at high temperature, resulting in changes in efficacy. So it's best to use casserole. At the same time, water quantity and so on should also be considered.

(2) Secondly, the extraction conditions are very important, which is the so-called temperature. In ancient times, it was impossible to quantify accurately, and different fuels had different combustion characteristics. According to different fuels, a series of related parameters, such as different temperature and heating time, can be obtained, such as long-term uniform combustion of cow dung.

(3) Finally, is it possible that the fuel composition played a role in the combustion process? Personally, I think it is unlikely. Self-burning organic components are almost destroyed. It is too difficult to reach the concentration of the treatment window when entering the medicinal soup, but this should not be the main factor.