Decoction is a commonly used dosage form in the clinic. For the soup boiling method of Tang Liu, the doctors of the past have attached great importance. For example, Xu Lingtai said in the "Source of Medicine": the method of decocting, Zui is easy to say, the effect of medicine is not effective, all concerned.
The utensils used in the decocting are mostly covered with a ceramic casserole. It is not recommended to use a wok.
The water used in the decocting is based on the principle of clean water. Clear spring water, river water, tap water and well water can be used, but the water quality must be selected. Before decocting, the medicine should be soaked for 10-30 minutes with water. Depending on the size, it is generally about 3cm of the drug. It is not advisable to open the lid frequently during the decocting to prevent the odor from being lost.
As for the control of the fire, it depends mainly on the nature and texture of the different drugs. Generally, the first martial arts, that is, the use of Wuhuo, the use of simmer after boiling. For example, the "Compendium of Materia Medica" contains: the first martial arts, such as the law service, there is no ineffective. For the solution of drugs, aromatization of wet drugs, etc., should be simmered in a fire, so as to avoid drug volatilization, the efficacy is reduced; for tonics, toxic drugs, more than simmer for a long time, so that the active ingredients of the drug to achieve or reduce toxicity.
The number of boiling times, generally speaking, 1 dose of medicine can be fried 3 times, Zui should be fried 2 times. Because the active ingredient of the drug is first dissolved in the water entering the tissue of the drug, and then diffused into the solution outside the drug. When the concentration of the solution inside and outside the medicinal material reaches equilibrium, the active ingredient does not continue to dissolve due to the osmotic pressure balance. At this time, only the liquid is filtered out, and water is added to cook, and the active ingredient can continue to be dissolved. In order to make full use of the medicine, avoid waste, and better exert the effect of the medicine, one dose of medicine Zui is boiled 2 times or 3 times.
Traditional Chinese medicine decoction, general medicine can be fried at the same time, but some drugs have special treatment because of their nature, performance and clinical use, in order to make the active ingredient more soluble, and play the good effect of Zui. Therefore, when decoction of decoction, pay attention to the special treatment of some herbs.
(1) First frying : such as magnets, oysters and other minerals, shellfish drugs, because its active ingredients are not easy to fry, should be fried for about 30 minutes before being included in other medicines; Chuanwu, Fuzi and other drugs due to their toxic and long-lasting Can be reduced, but also should be fried first. Chuanwuwu, system attached tablets should also be fried before re-entering the same medicine to ensure the safety of medication.
(2) After the lower: refers to the odor of the drug, should avoid long-term fried. In order to prevent the fragrance from being produced, the medicine should be taken when the general medicine is about to be fried, and then fried for 4-5 minutes, such as peppermint, Amomum villosum, and white cardamom. In addition, some medicines that will reduce the efficacy for a long time should also be followed by such as rhubarb and uncaria.
(3) Package frying: In order to prevent the turbidity of some medicines after decoction and reduce the bad stimulation of the digestive tract and throat, then wrap the medicine with a thin cloth or gauze, and then boil it in a pot. Such as red stone fat, psyllium, Cyclobalanopsis, Magnolia and so on.
(4) Another pure or another fried: some valuable drugs, in order to try to preserve their active ingredients, reduce the simultaneous decoction absorbed by other drugs, should be stewed or fried. Such as ginseng, should be cut into pieces, put into a small cup or small bowl, and stewed for 2-3 hours. Another example is the expensive and difficult to fry antelope horns, scorpions, etc., should be cut into small slices and fried for 2 hours to take juice, or you can use water mill juice or smash into fine powder to adjust clothes. Others such as cinnamon should also be decoction.
(5) Dissolution and deuteration: a drug that is colloidal, viscous, and easily soluble. It should be separately heated and dissolved during decoction, then added to other slag-removing liquids and boiled, and stirred to dissolve. In order to avoid coking with the frying pan, and sticking to other drugs, affecting the efficacy. In addition, some medicines, such as thenardite, can be directly put into other slag-removing liquids, which can be taken by micro-cooking.
(6) Chongfu: refers to powder, dan, pellets, natural juice, and other aromatic or valuable drugs, without boiling, boiled with boiling water. Such as Tianqi powder, cinnamon, agarwood, Zi Xuedan, Liushen pills, raw oyster sauce, bamboo leaching, ginger juice, bezoar, musk and so on.
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