1. Suzi Jiangqi Decoction: A Classic Recipe with a Millennium of Inheritance

Suzi Jiangqi Decoction It comes from 'Taiping Huimin Heji Jufang' officially promulgated in the Song Dynasty. This is the first ready-made medicine pharmacopoeia compiled by the government in the history of our country, and it has a profound impact on the development of later prescription science.

Most of the prescriptions included in 'Taiping Huimin Heji Jufang' have been clinically verified with definite curative effects, and Suzi Jiangqi Decoction is one of the outstanding ones. With its unique formula idea and remarkable efficacy, it has become a commonly used prescription for treating various lung diseases and has been widely applied and highly regarded by later physicians.

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2. Introduction to the Ingredients of Su zi Jiang qi Tang

The drug composition of Suzi Jiangqi Decoction is rigorous and exquisite, including the following traditional Chinese medicines:

1. Perilla Seed

Perilla Seed is the monarch drug in Suzi Jiangqi Decoction. It is pungent and warm in nature, and belongs to the lung and large intestine meridians. Perilla Seed has the functions of descending qi to resolve phlegm, stopping coughing and relieving asthma. It can effectively descend the lung qi, eliminate phlegm, and has a good therapeutic effect on symptoms such as coughing and asthma caused by the upward reversal of lung qi and excessive phlegm.

2. Pinellia Tuber

Pinellia Tuber is the ministerial drug, pungent in taste and warm in nature, and belongs to the spleen, stomach and lung meridians. Pinellia Tuber dries dampness and resolves phlegm, and reduces adverse qi and stops vomiting. It can assist Perilla Seed to enhance the efficacy of resolving phlegm and descending qi, and at the same time harmonize the stomach and stop vomiting, preventing complications such as the upward reversal of stomach qi and vomiting caused by the upward reversal of lung qi.

3. Peucedanum Root

Peucedanum Praeruptorum is bitter, pungent and slightly cold, and belongs to the lung meridian. Peucedanum Praeruptorum has the functions of descending qi and removing phlegm, and dispersing wind-heat. When combined with Perilla Seed, it enhances the power of descending qi and resolving phlegm, and can disperse wind-heat in the lung meridian, enabling the lung qi to descend smoothly.

4. Magnolia Bark

Magnolia Officinalis is bitter, pungent and warm in nature, and belongs to the spleen, stomach, lung and large intestine meridians. Magnolia Officinalis can dry dampness and eliminate phlegm, and lower qi and relieve fullness. It can assist Pinellia Tuber to dry dampness and resolve phlegm, and also enhance the function of lowering qi, so as to reduce qi and eliminate phlegm and relieve symptoms such as chest distress and fullness.

5. Dried Tangerine Peel

Tangerine Peel is pungent, bitter and warm in nature, and belongs to the Spleen and Lung meridians. It regulates qi and strengthens the spleen, dries dampness and resolves phlegm. It can promote the qi movement of the spleen and stomach, assist other herbs in regulating qi and resolving phlegm, make the qi movement in the middle jiao smooth, and contribute to the descending of the lung qi.

6. Licorice Root

Licorice Root is sweet and neutral, and belongs to the Heart, Lung, Spleen and Stomach meridians. It has the functions of invigorating the spleen and replenishing qi, moistening the lung and relieving cough, and harmonizing various herbs. In Suzi Jiangqi Decoction, Licorice Root can not only harmonize various herbs to make their properties coordinate with each other, but also moisten the lung and relieve cough, alleviate the cough symptoms, and replenish qi of the spleen to prevent the herbs from being too drastic and damaging the healthy qi.

7. Chinese Angelica

Angelica Sinensis is sweet, pungent and warm in nature, and belongs to the Liver, Heart and Spleen meridians. It enriches blood and promotes blood circulation, regulates menstruation and alleviates pain. In this formula, the main role of Angelica Sinensis is to nourish the blood and soothe the liver to control the upward floating of kidney water, and at the same time regulate qi and blood to make qi and blood harmonious, contributing to the recovery of the lung qi.

8. Cinnamon Twig

Cinnamon Bark is pungent, sweet and extremely hot, and belongs to the Kidney, Spleen, Heart and Liver meridians. It warms the kidney and receives qi, guiding fire back to its origin. It can warm and tonify the kidney yang to enable the kidney qi to be received, contributing to the descending of the lung qi, and at the same time enhance the effect of other herbs in warming and promoting yang qi, improving the diseases caused by pathogenic cold.

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3. Efficacy and Treatment of Suzi Jiangqi Decoction

Suzi Jiangqi Decoction It has the effects of descending qi and relieving asthma, dispelling phlegm and relieving cough. It is mainly used to treat the syndrome of dyspnea with upward excess and downward deficiency.

The so-called upward excess refers to the accumulation of phlegm-drool in the lung, with the lung qi ascending rebelliously, manifested as dyspnea with cough, profuse phlegm which is white in color, and fullness and stuffiness in the chest. The downward deficiency refers to the insufficiency of the kidney yang, with the kidney failing to receive qi, presenting with more exhalation than inhalation, soreness and weakness in the waist and feet, and lassitude of the limbs.

This formula syndrome is mostly caused by the obstruction of the lung qi with the accumulation of phlegm-drool, and at the same time the deficiency of the kidney yang with the kidney failing to receive qi. Due to the obstruction of the lung qi and the internal obstruction of phlegm-drool, the airway is not smooth, so there is dyspnea with cough and profuse phlegm; due to the insufficiency of the kidney yang, it cannot warm and nourish the lower jiao, resulting in the manifestations of downward deficiency such as soreness and weakness in the waist and feet. Suzi Jiangqi Decoction, through the actions of descending qi and resolving phlegm, warming the kidney and receiving qi, enables the upward excess to be reduced and the downward deficiency to be replenished, thus achieving the purpose of treating dyspnea with cough.

4. Analysis of the Formula's Principles of Suzi Jiangqi Decoction

1. Lowering Qi and Resolving Phlegm

Perilla Seed is the monarch drug for descending qi and resolving phlegm, Pinellia Tuber is the minister drug for drying dampness and resolving phlegm, Peucedanum Praeruptorum is the assistant drug for descending qi and removing phlegm. The combination of these three drugs enhances the power of descending qi and resolving phlegm, treating the symptoms of excessive phlegm and qi counterflow in the upper body, enabling the lung qi to descend smoothly and the phlegm turbidity to be discharged.

2. Warming the Kidneys and Astringing Qi

Cinnamon warms the kidney and helps to receive qi, guiding the floating fire back to its origin. Angelica Sinensis nourishes the blood and tonifies the liver, controlling the upward floating of kidney water. The two are combined to treat the deficiency in the lower body. When the kidney yang is warmed and the kidney qi is received, symptoms such as more exhalation and less inhalation due to the failure of the kidney to receive qi can be improved.

3. Regulating Qi and Strengthening the Spleen

Tangerine Peel regulates qi and strengthens the spleen, Magnolia Officinalis dries dampness and eliminates phlegm, promotes qi downward and relieves fullness. Licorice Tonifies the spleen and benefits qi, harmonizes all the drugs. The combined action of these three drugs regulates the qi movement in the middle jiao, enabling the normal transportation and transformation function of the spleen and stomach, contributing to the descent of lung qi, and at the same time preventing the strong drugs from damaging healthy qi, playing the role of harmonizing the properties of the drugs.

The whole formula is formulated with consideration of both the root and the branch, treating both the upper and lower parts simultaneously. It mainly focuses on descending qi and removing phlegm, supplemented by warming the kidney and helping to receive qi, regulating qi and strengthening the spleen, so as to cure the dyspnea with upper excess and lower deficiency.

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5、  Suzi Jiangqi Decoction Clinical Applications and Indications

1. Chronic Obstructive Pulmonary Disease

Patients with chronic obstructive pulmonary disease often present with recurrent dyspnea, excessive white phlegm, chest fullness and stuffiness, etc. According to traditional Chinese medicine syndrome differentiation, it mostly belongs to the syndrome of upper excess and lower deficiency. Suzi Jiangqi Decoction can improve the respiratory function of patients, relieve dyspnea symptoms, reduce sputum secretion, and improve the quality of life of patients by descending qi and resolving phlegm, warming the kidney and helping to receive qi.

2. Bronchial Asthma

For the remission stage of bronchial asthma manifested as deficiency of both the lung and kidney and internal accumulation of phlegm turbidity, Suzi Jiangqi Decoction also has a certain therapeutic effect. It can regulate the immune function of the body, strengthen the qi of the lung and kidney, reduce the frequency of asthma attacks, and relieve the symptoms during the attacks.

3. Senile Chronic Bronchitis

Due to the gradual decline of lung qi and kidney qi deficiency in the elderly, they are prone to suffer from chronic bronchitis. Suzi Jiangqi Decoction targets the pathogenesis of upper excess and lower deficiency in senile chronic bronchitis, and can effectively improve symptoms such as dyspnea, expectoration, and asthma, delaying the progression of the disease.

In addition, for some other respiratory diseases caused by the adverse rising of lung qi and the failure of the kidney to receive qi, such as asthmatic bronchitis, etc., under the condition of accurate syndrome differentiation, Suzi Jiangqi Decoction can also be modified and applied for treatment.

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6. Dosage and Administration of Suzi Jiangqi Decoction

The usage of Suzi Jiangqi Decoction is as follows: Grind the above herbs into coarse powder. Take two large coins (9g) each time, add one and a half cups of water, two slices of fresh ginger, one date, and five pieces of perilla leaf, decoct until eight-tenths of the original volume, remove the dregs and take while it is warm, at any time. In modern clinical application, the dosage is usually adjusted appropriately according to the specific situation of the patient. The general common dosage is about 12 - 6g, decocted with water, one dose per day, taken in two divided doses.

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7. Precautions and Contraindications of Suzi Jiangqi Decoction

1. Precautions

The property of this formula is relatively warm and dry. Taking it for a long time or with an excessive dosage may consume yin fluid. Therefore, it should be used with caution for those with hyperactivity of fire due to yin deficiency. Most of the herbs in the formula are warm and dry products. After taking them, patients with yin deficiency may experience aggravated symptoms of yin fluid deficiency. During the medication period, pay attention to a light diet and avoid eating spicy, greasy, raw and cold and other stimulating foods. Pay attention to observing the reaction after taking the medicine. If discomfort symptoms occur, stop taking the medicine immediately and consult a doctor.

2. Contraindications

Use with caution during pregnancy. This formula contains some herbs that promote qi movement and activate blood circulation, which may have a certain impact on the fetus. Therefore, pregnant women should use it with caution. If pregnant women have symptoms similar to wheezing due to excess above and deficiency below, they should choose a safer treatment method under the guidance of a doctor.

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8. Modern Research Progress of Suzi Jiangqi Decoction

With the development of modern medicine, the research on Suzi Jiangqi Decoction has been continuously deepened. Modern research shows that Suzi Jiangqi Decoction has various pharmacological effects.

1. Effects on the Respiratory System (Relieving Wheezing and Coughing)

It has been found that Suzi Jiangqi Decoction can regulate the contraction and relaxation of airway smooth muscle, reduce airway inflammatory reaction, and decrease airway hyperresponsiveness, thus relieving symptoms such as wheezing and shortness of breath. The drug components such as perilla fruit and Peucedanum praeruptorum contained in it have the effects of calming, eliminating phlegm and relieving asthma, and can improve pulmonary ventilation function and enhance the respiratory quality of patients.

2. Impact on the Cardiovascular System

Some studies show that Suzi Jiangqi Decoction may have a certain regulatory effect on the cardiovascular system. It can improve the blood supply of the heart, enhance myocardial contractility, and lower blood pressure, which may have potential therapeutic value for some patients with cardiovascular diseases complicated with respiratory diseases.

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3. Regulation of the Immune System

Suzi Jiangqi Decoction can regulate the immune function of the body and enhance the body's resistance. It can promote the proliferation and differentiation of lymphocytes, increase the level of immunoglobulins in the body, and thus contribute to the prevention and treatment of diseases caused by low immune function.

In addition, there are also studies exploring the effects of Suzi Jiangqi Decoction on improving the quality of life of patients with chronic diseases and regulating metabolism. These studies provide a richer theoretical basis for the clinical application of Suzi Jiangqi Decoction. In the future, with the continuous deepening of research, it is believed that Suzi Jiangqi Decoction will demonstrate its unique advantages and value in more fields.

In conclusion, as a classic prescription in traditional Chinese medicine, Suzi Jiangqi Decoction has been passed down for thousands of years and has remarkable curative effects in the treatment of various lung diseases. Understanding its origin, composition, efficacy, application and modern research progress helps us better understand and apply this precious prescription to protect the health of patients.

Conclusion of Su zi Jiang qi Tang

Su Zi Jiang Qi Tang is a classic Song Dynasty formula from the Tai Ping Hui Min He Ji Ju Fang in traditional Chinese medicine. It is specifically indicated for patterns of upper excess and lower deficiency involving rebellious lung qi, rebellious qi, qi stagnation, qi deficiency, kidney deficiency, kidney yang deficiency, and yin deficiency, often with phlegm accumulation, excessive phlegm, copious phlegm, and phlegm-drool accumulation.

The formula directs qi downward, descends qi, resolves phlegm, dispels phlegm, and dries dampness to stop cough and wheezing, while relieving shortness of breath, chest tightness, chest fullness, chest oppression, fullness and oppression in the chest, and chest and diaphragm fullness. It also addresses fatigue, lower back pain, and edema, typically with white phlegm and a white or greasy tongue coating. Key herbs include zi su zi (perilla seed), ban xia (pinellia), hou po (magnolia bark), qian hu (peucedanum), dang gui (angelica), rou gui (cinnamon), and ginseng. This formula is commonly used for chronic cough, chronic bronchitis, and emphysema.

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