1. Prescription Source & History

1. Recorded in Ancient Books

Fangji Huangqi Decoction It is from 'Synopsis of the Golden Chamber' written by Zhang Zhongjing in the Eastern Han Dynasty. This classic work is an important classic in traditional Chinese medicine clinical practice, recording numerous prescriptions with definite curative effects, and Fangji Huangqi Decoction is one of them. The discussion on prescriptions in 'Synopsis of the Golden Chamber' is detailed and accurate, providing an important basis for later generations of doctors to apply and study this prescription.

2. Historical Evolution

Since the Eastern Han Dynasty, Fangji Huangqi Decoction has gone through the inheritance and development of doctors in each generation. In different historical periods, doctors continuously enriched its application scope and modifications according to clinical practice. For example, doctors in the Jin and Yuan dynasties further elaborated on its theory, making the application of this prescription more flexible and diverse. In the Ming and Qing dynasties, based on inheriting the experience of predecessors, doctors had a deeper discussion on the application of Fangji Huangqi Decoction, and its advantages in treating various diseases gradually emerged, becoming one of the commonly used prescriptions in traditional Chinese medicine clinical practice.

2. Composition of Medicinal Flavors

1. Monarch Drug - Astragalus

Astragalus membranaceus has a sweet taste and a slightly warm nature, and enters the spleen and lung meridians. It has the effects of replenishing qi and ascending yang, securing the exterior and stopping sweating, promoting diuresis and relieving edema, promoting the production of body fluid and nourishing blood, promoting qi circulation and dredging collaterals, expelling pus by supporting healthy qi, and promoting granulation and muscle growth. In Fangji Huangqi Decoction, the dosage of Astragalus membranaceus is relatively large and it is the monarch drug. Its main function is to replenish qi and strengthen the spleen, enabling the spleen qi to function normally, thereby enhancing the body's transportation function and laying a foundation for the subsequent drugs to exert their effects. At the same time, Astragalus membranaceus can also secure the exterior and stop sweating, preventing the muscle surface from being loose and the defensive qi from leaking out, and has a good therapeutic effect on spontaneous sweating caused by insecurity of defensive qi.

2. Minister Drug - Stephania Tetrandra

Stephania tetrandra has a bitter, pungent taste and a cold nature, and enters the bladder and lung meridians. It can dispel wind and relieve pain, promote diuresis and relieve edema. As the ministerial drug, Stephania tetrandra assists Astragalus membranaceus to enhance the power of promoting diuresis and relieving edema. Its bitter and cold nature can clear heat and remove dampness, and has a significant curative effect on symptoms such as limb edema and dysuria caused by internal retention of water and dampness. At the same time, Stephania tetrandra can also dispel wind and dredge collaterals, and can relieve the pain caused by the blockage of the collaterals by pathogenic wind-dampness.

3. Assistant Drugs - Atractylodes Macrocephala, Licorice

Atractylodes macrocephala has a sweet and bitter taste and a warm nature, and enters the spleen and stomach meridians. It can strengthen the spleen and replenish qi, dry dampness and promote diuresis, stop sweating, and prevent miscarriage. When combined with Astragalus membranaceus, it enhances the function of strengthening the spleen and removing dampness, enabling water and dampness to be transported. Licorice has a sweet taste and a neutral nature, and enters the heart, lung, spleen, and stomach meridians. It has the functions of tonifying the spleen and replenishing qi, moistening the lung and relieving cough, clearing heat and detoxifying, and harmonizing all the drugs. Licorice in the prescription can not only harmonize the properties of drugs such as Astragalus membranaceus and Stephania tetrandra, but also tonify the spleen and replenish qi, assisting Astragalus membranaceus to enhance the effect of replenishing qi.

4. Messenger Drugs - Ginger, Jujube

Fresh ginger has a pungent taste and a slightly warm nature, and enters the lung, spleen, and stomach meridians. It has the effects of inducing sweating to dispel cold, warming the middle and stopping vomiting, resolving phlegm and relieving cough, and detoxifying fish and crab poisons. Chinese date has a sweet taste and a warm nature, and enters the spleen, stomach, and heart meridians. It can replenish the middle and benefit qi, nourish blood and soothe the nerves. The combination of fresh ginger and Chinese date harmonizes nutrient qi and defensive qi, enables the qi of the spleen and stomach to be harmonized, the qi and blood to be generated with a source, and at the same time can relieve the drastic nature of all the drugs, making the property of the whole prescription mild and easy to absorb.

Pathogenesis, Effects & Indications of Fangji Huangqi Decoction

1. Pathogenesis

Fangji Huangqi Decoction The pathogenesis it targets is mainly deficiency of superficial qi leading to insecurity, invasion of the muscles and skin by pathogenic wind-dampness, and internal retention of water-dampness. The defensive qi is weak, the muscles and skin are not secure, and pathogenic wind-dampness takes the opportunity to invade, stagnating between the muscles and skin meridians, resulting in unsmooth qi and blood circulation, presenting symptoms such as limb pain and heaviness. At the same time, the transportation and transformation functions of the spleen and stomach are abnormal, the metabolism of water-dampness is disordered, and water-dampness accumulates internally, causing edema.

2. Effects

This formula has the effects of supplementing qi to expel wind, strengthening the spleen to promote diuresis. Through Astragalus membranaceus for supplementing qi and consolidating the superficial resistance, Stephania tetrandra for expelling wind and promoting diuresis, Atractylodes macrocephala for strengthening the spleen and drying dampness, Glycyrrhiza uralensis for tonifying the spleen and replenishing qi, and fresh ginger and Chinese date for regulating nutrient qi and defensive qi, they work together to achieve the purpose of expelling pathogenic wind-dampness from the muscles and skin, strengthening the spleen to promote diuresis and reduce swelling, and restoring the normal functions of the body.

3. Indications

It is mainly used to treat wind-water or wind-dampness syndrome due to deficiency of superficial qi. Symptoms include sweating and aversion to wind, body heaviness and slight swelling, or joint pain, difficult urination, pale tongue with white coating, and floating pulse. Wind-water syndrome refers to the edema disease caused by external invasion of wind pathogen, disharmony of the lung in regulating water passage, and overflow of water-dampness in the muscles and skin. Wind-dampness syndrome is the disease caused by invasion of pathogenic wind-dampness into the muscles and skin meridians, resulting in unsmooth qi and blood circulation. Stephania Tetrandra and Astragalus Decoction has a good therapeutic effect on such diseases.

Analysis of Fangji Huangqi Decoction's Formula

1. Combining Qi-tonifying with Wind-dispelling and Diuresis

Astragalus membranaceus supplements qi and strengthens the spleen, which is a method of strengthening healthy qi. Stephania tetrandra expels wind and promotes diuresis, expelling pathogenic factors. Their combination takes both strengthening healthy qi and expelling pathogenic factors into consideration. With sufficient healthy qi, the body's ability to resist external pathogens can be enhanced; expelling wind and promoting diuresis can eliminate pathogenic wind-dampness and water-dampness problems, enabling the removal of pathogens and the restoration of health.

2. Synergistic effect

Atractylodes macrocephala strengthens the spleen and dries dampness, enhancing the transportation and transformation functions of the spleen and stomach, providing a source for the transportation of water-dampness. Stephania tetrandra promotes diuresis and reduces swelling, directly targeting the syndrome of internal retention of water-dampness. Their synergistic effect can effectively improve the abnormal transportation and transformation of the spleen and stomach and the internal accumulation of water-dampness, achieving the purpose of strengthening the spleen and promoting diuresis.

3. Harmonizing Nutrient Qi and Defensive Qi

Fresh ginger and Chinese date regulate nutrient qi and defensive qi. The defensive qi is weak, and the disharmony between nutrient qi and defensive qi easily leads to symptoms such as sweating and aversion to wind. Fresh ginger relieves exterior cold, and Chinese date supplements middle qi and benefits qi. Their combination harmonizes nutrient qi and defensive qi, secures the muscles and skin, and helps relieve the syndrome of deficiency of superficial qi.

4. Licorice Harmonizes Herbs

Glycyrrhiza uralensis has a sweet taste and a neutral nature. It can moderate the bitter-cold nature of Stephania tetrandra, harmonize the properties of drugs such as Astragalus membranaceus and Atractylodes macrocephala, making the compatibility of the whole formula more coordinated and exerting a better therapeutic effect. At the same time, Glycyrrhiza uralensis itself also has the effect of tonifying the spleen and replenishing qi, assisting Astragalus membranaceus to enhance the effect of supplementing qi.

Stephania Tetrandra and Astragalus Decoction: A classic conditioning plan for supplementing qi to expel wind, strengthening the spleen to promote diuresis

V. Comparison with Other Formulas

1. Comparison with Mahuang Jiazhu Decoction

Mahuang Jiazhu Decoction comes from Synopsis of the Golden Chamber and is composed of Ephedra, Cinnamon Twig, Apricot Kernel, Licorice Root, and Atractylodes Macrocephala. Its effects are to induce sweating to relieve exterior syndrome, disperse cold and eliminate dampness. It is mainly used to treat the excess syndrome of cold-dampness in the exterior, with aversion to cold, fever, absence of sweating, and body pain as the main symptoms. Compared with Fangji Huangqi Decoction, Mahuang Jiazhu Decoction focuses on inducing sweating to disperse cold and eliminate dampness, and is applicable to the exterior excess syndrome of cold-dampness with no sweating; while Fangji Huangqi Decoction focuses on supplementing qi, expelling wind, and promoting diuresis, and is applicable to the syndrome of wind-water or wind-dampness with sweating due to exterior deficiency.

2. Comparison with Wupi Powder:

Wupi Decoction It is composed of Fresh Ginger Peel, Mori Cortex, Tangerine Peel, Areca Peel, and Poria Peel, and has the effects of promoting diuresis to alleviate edema, regulating qi and strengthening the spleen. It is mainly used to treat the syndrome of skin edema due to spleen deficiency with excessive dampness and qi stagnation with fluid retention, with general body swelling, heavy limbs, fullness and distension in the chest and abdomen, and difficult urination as the main symptoms. Both Fangji Huangqi Decoction and Wupi Powder have the effect of promoting diuresis to alleviate edema, but Fangji Huangqi Decoction emphasizes more on supplementing qi and expelling wind, and is applicable to the syndrome of exterior deficiency with dampness; Wupi Powder focuses on regulating qi, strengthening the spleen, and promoting diuresis, and is applicable to the syndrome of skin edema due to spleen deficiency and qi stagnation.

VI. Clinical Applications & Indications

1. Internal Medicine Diseases

For chronic nephritis, nephrotic syndrome, etc. belonging to the syndrome of wind-water or wind-dampness, manifested as symptoms such as edema, proteinuria, sweating and aversion to wind, Fangji Huangqi Decoction has a certain therapeutic effect. By supplementing qi, expelling wind, and promoting diuresis, it can improve kidney function, reduce proteinuria, and alleviate edema. In addition, for rheumatoid arthritis, rheumatoid arthritis, etc. belonging to wind-dampness obstruction, with exterior deficiency and insecurity simultaneously, this formula can also be used. It can relieve joint pain and swelling, improve joint movement function, and at the same time regulate the body's immune function.

2. Surgical Diseases

After surgical operation or trauma, if there are symptoms such as wound exudation and limb swelling, and the syndrome differentiation belongs to qi and blood deficiency with invasion of wind-dampness pathogens, Fangji Huangqi Decoction can be modified for treatment. It can promote wound healing, reduce exudation, alleviate limb swelling, and prevent infection.

3. Gynecological Diseases

For pregnancy edema, if the syndrome differentiation is spleen deficiency with excessive dampness, with insecurity of defensive qi simultaneously, it can be modified based on Fangji Huangqi Decoction for treatment. It can strengthen the spleen, promote diuresis, prevent miscarriage, relieve pregnancy edema symptoms, and ensure the normal development of the fetus.

7. Additive and Subtractive Changes

1. Those with exterior cold

Ephedra can be added to enhance the power of inducing sweating to relieve exterior syndrome. For example, Fangji Huangqi Decoction combined with Mahuang Decoction is modified, and is applicable to wind-water with more severe exterior cold, aversion to cold and no sweating.

Those with excessive dampness

Poria, Alisma orientale, etc. can be added to enhance the effect of promoting diuresis and percolating dampness, so that the pathogenic factors of water and dampness can be better excreted from the body.

3. Those with obvious pain

Ramulus Cinnamomi, Rhizoma seu Radix Notopterygii can be added to expel wind, dredge collaterals and relieve pain, alleviating the symptoms of limb joint pain.

Severely Qi Deficiency

The dosage of Astragalus membranaceus can be increased, or Codonopsis pilosula, Pseudostellaria heterophylla can be added to enhance the effect of replenishing qi, so as to further improve the healthy qi of the body.

VIII. Dosage (Traditional and Modern)

1. Traditional Methods

The original usage of the formula was: Stephania tetrandra 30g, Glycyrrhiza uralensis 15g (prepared), Atractylodes macrocephala 22.5g, Astragalus membranaceus 30.3g, Zingiber officinale 120g, Ziziphus jujuba 12 pieces. Decoct with 2000ml of water, boil to get 1200ml, remove the dregs, take warm 200ml, three times a day. In modern clinical application, the dosage is generally adjusted appropriately according to the condition and the patient's constitution. Usually, Stephania tetrandra 9 - 12g, Astragalus membranaceus 12 - 15g, Atractylodes macrocephala 9 - 12g, Glycyrrhiza uralensis 6g, Zingiber officinale 9g, Ziziphus jujuba 4 - 6 pieces. Decoct with water, one dose a day, taken in two times.

2. Modern Concentrated Granules

There is a concentrated granule preparation of Decoction of Stephania Tetrandra and Astragalus membranaceus in modern times, which is more convenient to take. Generally, take it冲服 according to the dosage specified in the instructions, usually one dose a day, taken in two or three times. The concentrated granules maintain the efficacy of the traditional formula, and are convenient for storage and carrying, suitable for the modern fast-paced lifestyle.

IX. Precautions and Taboos

1. Precautions

During the period of taking Decoction of Stephania Tetrandra and Astragalus membranaceus, pay attention to a light diet, avoid eating raw, cold, greasy, spicy and other stimulating foods, so as not to affect the curative effect of the medicine. At the same time, pay attention to rest, avoid fatigue, and keep a happy mood, which is beneficial to the recovery of the body.

2. Taboos

Those with yin deficiency and excessive fire should use it with caution, because most of the drugs in the formula are warm in nature and may aggravate the symptoms of yin deficiency and excessive fire. Those who are allergic to any drug in the formula are prohibited. Pregnant women should use it under the guidance of a doctor. Although the drugs in the formula generally have no obvious adverse reactions such as teratogenesis, for the sake of safety, still need to be cautious.

X. Modern Research Progress

1. Pharmacological Research

Modern research shows that Stephania and Astragalus Decoction has the effect of regulating immune function. Astragalus can enhance the activity of immune cells in the body and improve the body's resistance; drugs such as Stephania also have certain immunomodulatory effects and can improve the immune imbalance state of the body. This formula also has a diuretic effect, can increase urine volume, promote the excretion of water and electrolytes in urine, and relieve edema. In addition, Stephania and Astragalus Decoction also has a certain impact on the cardiovascular system, can improve heart function, regulate blood pressure, and reduce blood viscosity.

2. Clinical Research

In clinical research, Stephania and Astragalus Decoction has achieved good therapeutic effects in the treatment of various diseases. In addition to the internal medicine, surgery, and gynecological diseases mentioned above, there are also relevant research reports on the treatment of diabetic nephropathy, obesity, etc. Through the mechanisms of replenishing qi, expelling wind, and promoting diuresis, it can improve the symptoms of these diseases, reduce relevant indicators, and improve the quality of life of patients. For example, in the treatment of diabetic nephropathy, Stephania and Astragalus Decoction can reduce proteinuria, protect renal function, and delay the progression of the disease.

As a classic prescription in traditional Chinese medicine, Stephania and Astragalus Decoction has been passed down for thousands of years and demonstrated unique advantages in clinical applications. With the continuous deepening of modern research, its mechanism of action and scope of application are also constantly expanding, bringing health benefits to more patients.

Summary

Stephania and Astragalus Decoction (modified Stephania and Astragalus Decoction) comes from Synopsis of the Golden Chamber and is a commonly used prescription for treating wind-water syndrome and wind-damp syndrome, with the functions of expelling wind, dispelling pathogenic factors, replenishing qi and strengthening the spleen, promoting diuresis by strengthening the spleen, expelling wind and promoting diuresis, replenishing qi and consolidating the exterior, and replenishing qi and strengthening the exterior. It is applicable to sweating and aversion to wind, edema, and wind-damp syndrome caused by deficiency of the exterior and qi deficiency, with floating pulse. In the formula, there are Stephania (Cocculus orbiculatus), Astragalus, Atractylodes macrocephala, Licorice (prepared licorice), Chinese date, etc., which are often modified and applied clinically. For example, adding Poria cocos and Alisma orientale can promote diuresis, and adding Cinnamomum cassia and Paeonia lactiflora has good therapeutic effects on chronic glomerulonephritis.