The steps and methods of decoction, and the operation process of decoction

Before decoction, we should prepare utensils, mainly casseroles and clay pots, followed by enamel jars, and avoid copper and iron pots, so as not to cause chemical changes and affect the curative effect.

Methods and Steps:

1. Soak the herbs for 30-60 minutes, use water above the water surface, and decoction twice in general.

2. Add 1 3-1 2 to the amount of water added to the decoction for the first decoction. The decoction is removed from the slag twice, filtered and mixed, and then taken in two parts.

Note: The heat and time of decoction should be determined according to the performance of the drug. Generally speaking, antidotes and heat-clearing drugs should be decocted on fire, the time should be short, and the decoction should be 3-5 minutes after boiling; The tonic medicine needs to be fried slowly for a long time, and then continue to fry for 30-60 minutes after boiling.

Some medicines have different textures, and the decoction method is more special, so there should be instructions on the prescription.

Traditional Chinese medicine, also known as Chinese herbal medicine, refers to substances used in traditional Chinese medicine to prevent and cure diseases, including natural medicines and their processed products. Although nominally called "herb" medicine, it is mainly herb and tree medicine, but also animal medicine (including turtles, turtles, sheep, tigers and other animal body parts), insect medicine (including earthworms, centipedes, turtle insects, etc.), mineral drugs (including various metals).

(1) First decoction: shells, shells, fossils and most mineral medicines, such as oysters, magnets, etc., should be decocted for about 30 minutes before being decocted with other medicines because their active ingredients are not easy to decoction. In addition, some traditional Chinese medicines are more toxic, such as aconite, shengbanxia, etc., in order to reduce their toxicity and ensure the safety of medication.

2) Later: flowers, leaves and some rhizomes and other medicines, because their active ingredients are easy to volatilize or destroy the decoction of the two intolerant decoction, such as mint, rhubarb, senna, etc., after the decoction of other medicines, it should be included after the decoction of other medicines, and the decoction can be 5-10 minutes.

3) Calming: Colloidal drugs such as deer horn gum, ejiao, etc., should not be decocted with other medicines, and need to be stewed separately, and then mixed with other medicines.

4) Preparation: Drugs that are not suitable for decoction (such as miscanthus nitrate) and liquid drugs (such as bamboo drain, ginger ale, etc.) should be taken with boiling water or mixed with other liquid medicines.

5) Pack decoction: The decoction of the medicine pack is to put the decoction pieces that need to be decocted in a gauze bag, tie the bag tightly and decoction together with the group medicine. Decoction pieces containing more mucus (such as psyllium, coria seed, etc.), decoction pieces rich in fluff (such as spiraled flowers, loquat leaves, etc.), pollen and other tiny decoction pieces (such as clam powder, Puhuang, Haijinsha, Liuyisan, etc.).

1. Calculate the amount of water added according to the amount of Chinese medicine, the weight of the decoction drug, the texture of the drug, the decoction time and the amount of decoction, calculate and add water with an automatic water filling machine, and soak the drug for 30 minutes.

2. Generally, it is advisable to first fire (high fire) and then simmer (low fire), use high fire before boiling, and keep it slightly boiling with low fire after boiling. The decoction time depends on the nature and texture of different drugs, usually antidote drugs and other aromatic drugs, generally boiled quickly with a fire, and changed to a simmer for about 10-15 minutes to avoid the aroma dissipation and loss of medicinal properties caused by long-term cooking; After boiling, the tonic is kept on a simmer for 30-40 minutes to allow the active ingredients to be fully dissolved.

3. Pay attention to the types of medicines that need to be decocted first and then lowered, retain the characteristics of traditional decoction, and meet the needs of different prescriptions.

4. Each dose of Chinese medicine should be decocted twice or three times to fully decoction the active ingredients of the drug and improve the efficacy; The medicinal materials should be fully decocted thoroughly, so that there are no paste-like blocks, no white hearts, and no hard hearts.

5. When decocting the medicine, it should be prevented from overflowing, decoction or burning. Those who are dried or burned are forbidden to use it medicinally.

6. Internal drugs and external drugs should be distinguished by different labels.

7. The decoction liquid should be packed into a container that has been cleaned and sterilized and meets the requirements for holding food to prevent pollution.

8. When using a decoction machine to decoct traditional Chinese medicine, the decoction function of the decoction machine shall meet the relevant requirements of this specification. The decoction should be done at atmospheric pressure, and the decoction temperature should generally not exceed 100. The amount of liquid decoction should be consistent with the dosage of the formula, and the dosage should be evenly distributed.

(1) The decoction should be boiled for 10-15 minutes, and then other medicinal materials should be put into the decoction (soaked first).

2) After the medicine, it should be put into the same decoction for 5-10 minutes when the first decoction is about to be decocted to a predetermined amount.

3) Another decoction should be cut into small slices, decoction for about 2 hours, and the juice should be taken; In addition, the stewed medicine should be cut into thin slices, put in a covered container, add cold water (generally about 10 times the amount of medicine), simmer for 2-3 hours across the water, and take the juice. If the original prescription of such drugs is a compound formula, the decoction (stew) of the medicinal juice should also be mixed with the decoction of other medicinal materials in the prescription before being divided. Some special drugs can be specifically determined according to the characteristics of the decoction (stewing) time (appropriate amount of water).

4) The dissolving medicine (calcining) should be decocted to a predetermined amount of other medicines and removed from the slag, then placed in the liquid medicine, decocted on a slight fire, and constantly stirred at the same time, until the dissolved medicine can be dissolved.

5) The decoction should be packed into a decoction bag and closed, and then decocted with other medicines. The material of the decoction bag should meet the requirements of medicine (harmless to the human body) and have a filtration function.

6) The decoction of water substitute medicine should be decocted for 15-25 minutes, then the slag should be removed, filtered, and juice should be extracted, and then decocted with other medicinal materials in the formula.

7) For drugs with other special decoction requirements such as long-term decoction, brewing, and soaking, they should be operated according to the corresponding specifications.

The decoction first, then the medicine, another decoction or another stew, decoction, decoction, decoction instead of water medicine should be soaked before decoction, and the soaking time is generally not less than 30 minutes.