1. Prescription Source & History

1. Wisdom of Ancient Doctors

Bu Yang Huan Wu Decoction comes from "Corrections of Medical Works" written by Wang Qingren, a famous medical expert in the Qing Dynasty. Wang Qingren was a medical expert with profound insights and innovative spirit in medicine. Through in-depth observation and research on the structure of human viscera and the circulation of qi and blood in his long-term clinical practice, he accumulated rich experience. He believed that there were some inaccuracies in the understanding of human viscera in traditional medicine at that time, so he dissected corpses himself to correct the fallacies of predecessors and laid a solid foundation for the establishment of his medical theory and prescriptions at the same time.

2. Background & Creation Purpose

In the era when Wang Qingren lived, the understanding and treatment methods of diseases such as stroke in the medical field were relatively limited. Stroke, as a disease that seriously threatens human health, brought great pain to patients and their families. Wang Qingren witnessed the tragic encounters of many stroke patients and deeply felt the inadequacy of traditional treatment methods. He was determined to create a more effective prescription to treat the sequelae of stroke. Through a large number of clinical practices and in-depth research on the theory of qi and blood, he finally created Buyang Huanwu Decoction. Its original intention was to improve the condition of qi and blood stasis in stroke patients, promote the recovery of body functions, relieve the pain of patients, and improve the quality of life of patients.

2. Composition of Ingredients

1. King Herb: Astragalus

Astragalus membranaceus is the monarch drug in Buyang Huanwu Decoction and is used in a large dose. Astragalus membranaceus tastes sweet and is slightly warm in nature, and belongs to the lung and spleen meridians. It has various effects such as tonifying qi to lift yang, securing the exterior to stop sweating, promoting diuresis to alleviate edema, promoting the production of body fluid and nourishing blood, promoting qi movement to relieve pain, expelling toxins and discharging pus, and promoting granulation and promoting tissue regeneration. In Buyang Huanwu Decoction, Astragalus membranaceus is used in a large dose, mainly playing the role of tonifying qi. By tonifying qi, it promotes the circulation of blood, enhances the healthy qi of the body, makes qi flourish and blood move, so as to achieve the purpose of treating diseases caused by qi deficiency and blood stasis. Just as it is said in "Materia Medica Review": Astragalus membranaceus can tonify all kinds of deficiencies of the five zang-organs, treat stringy pulse and spontaneous sweating, reduce yin fire, remove lung heat, induce sweating when there is no sweating, and stop sweating when there is sweating.

2. Minister Herbs: Angelica, etc.

Angelica sinensis tail tastes sweet and pungent, is warm in nature, and belongs to the liver, heart and spleen meridians, and has the effects of promoting blood circulation to dredge the meridians and removing blood stasis to relieve pain. Red peony root tastes bitter and is slightly cold in nature, belongs to the liver meridian, can clear heat and cool blood, and disperse blood stasis to relieve pain. Chuanxiong tastes pungent and is warm in nature, belongs to the liver, gallbladder and pericardium meridians, and has the functions of promoting blood circulation and qi movement, dispelling wind and relieving pain. Peach kernel tastes bitter and sweet, is flat in nature, belongs to the heart, liver and large intestine meridians, can promote blood circulation and remove blood stasis, and moisten the intestines and relieve constipation. Safflower tastes pungent and is warm in nature, belongs to the heart and liver meridians, can promote blood circulation to dredge the meridians and disperse blood stasis to relieve pain. These five herbs jointly assist Astragalus membranaceus, enhance the power of promoting blood circulation and removing blood stasis, and play the role of dredging the meridians and dissipating blood stasis for the pathogenesis of qi deficiency and blood stasis, so as to make the circulation of qi and blood return to normal and improve the state of local qi and blood stasis.

3. Assistant & Guide Herb: Earthworm

Earthworm tastes salty and is cold in nature, belongs to the liver, spleen and bladder meridians, and has the effects of clearing heat and calming fright, dredging the meridians, relieving asthma and promoting diuresis. In Buyang Huanwu Decoction, earthworm, as an assistant and guiding drug, on the one hand, assists other herbs to dredge the meridians and plays the role of dredging the meridians, so that the medicinal power can better reach the disease location; on the other hand, the cold nature of earthworm can restrict the warm nature of other drugs in the prescription and prevent adverse reactions such as injuring yin caused by over-warm use of drugs.

3. Pathogenesis, Effects & Treatments

1. Analysis of Pathogenesis

The pathogenesis targeted by Buyang Huanwu Decoction is qi deficiency and blood stasis. The qi of the human body has important functions such as promoting the circulation of blood, warming the zang-fu organs and tissues, and defending against exogenous pathogens. When the healthy qi is deficient, the promoting function of qi weakens, and the blood circulation is not smooth, which is likely to lead to blood stasis blocking the meridians. Once blood stasis forms, it will further hinder the circulation of qi mechanism and aggravate the symptoms of qi deficiency, forming a vicious cycle. This state of qi deficiency and blood stasis is particularly obvious in diseases such as the sequelae of stroke, and patients often present symptoms such as hemiplegia, limb numbness, deviation of the mouth and eyes, etc.

2. Efficacy

Buyang Huanwu Decoction The main efficacy is to tonify qi, activate blood circulation and dredge the meridians. By using Astragalus membranaceus in a large dose to tonify qi, it makes qi flourish and blood move, enhances the healthy qi of the body, and improves the state of qi deficiency; at the same time, it is combined with Angelica sinensis tail, Red peony root, Chuanxiong, Peach kernel, Safflower, Earthworm and other herbs that promote blood circulation and remove blood stasis and dredge the meridians to dissipate blood stasis and dredge the meridians, so as to make the circulation of qi and blood return to normal. When qi moves, blood moves; when blood stasis is removed, the meridians are dredged, so as to achieve the purpose of treating various diseases caused by qi deficiency and blood stasis.

3. Treatment

Buyang Huanwu Decoction is mainly used to treat sequelae of stroke. The symptoms include hemiplegia, deviation of the mouth and eyes, slurred speech, salivation at the corners of the mouth, frequent urination or enuresis incontinence, dull tongue color, white tongue coating, and weak and slow pulse. In addition, for other diseases caused by qi deficiency and blood stasis, such as coronary heart disease, cerebral infarction, arteriosclerosis obliterans of lower extremities, etc., as long as they conform to the pathogenesis of qi deficiency and blood stasis, Buyang Huanwu Decoction can also be appropriately used for treatment based on syndrome differentiation and treatment.

Analysis of Buyang Huanwu Decoction

1. Synergy of Qi-tonifying

In the formula, Astragalus membranaceus is used in large doses to replenish qi and is the monarch drug. Qi is the commander of blood, and when qi moves, blood moves. A large amount of Astragalus membranaceus can replenish qi, enhance the promoting effect of qi, enable blood to run normally in the vessels, and prevent the formation of blood stasis. At the same time, promoting blood circulation and removing blood stasis drugs such as Angelica sinensis tail, Red Peony Root, Chuanxiong Rhizome, Peach Kernel, and Safflower are combined with Astragalus membranaceus. It can not only disperse blood stasis by relying on the qi-tonifying power of Astragalus membranaceus, but also prevent qi stagnation caused by simple qi supplementation. This synergistic effect of qi supplementation and blood circulation promotion reflects the ingenious application of the theory of the relationship between qi and blood in traditional Chinese medicine in the formula, enabling qi and blood to coordinate with each other and jointly play a therapeutic role.

2. The subtlety has not been clearly expressed in accurate English yet.

The drug compatibility of Buyang Huanwu Decoction is very delicate. The combination of Astragalus membranaceus and Angelica sinensis tail, one tonifies and the other activates, regulating qi and blood; the synergistic effect of Red Peony Root, Chuanxiong Rhizome, Peach Kernel, and Safflower enhances the effect of promoting blood circulation and removing blood stasis, dredging the blocked part of blood stasis; Earthworm has a strong effect of dredging collaterals, which can lead all the drugs directly to the affected area and make the medicinal power play a better role. The whole formula is rigorously compatible, with clear primary and secondary, and together they achieve the effects of replenishing qi, promoting blood circulation, and dredging collaterals, and has a significant therapeutic effect on diseases caused by qi deficiency and blood stasis.

3. Integrated Holistic and Local Treatment

Buyang Huanwu Decoction not only focuses on the treatment of local qi and blood stasis, but also emphasizes overall conditioning. By replenishing qi to enhance the healthy qi of the body, improving the body's disease resistance and self-repair ability, and fundamentally improving the pathological state of qi deficiency and blood stasis. At the same time, for local blood stasis blockage, drugs for promoting blood circulation and removing blood stasis and dredging collaterals are used for targeted treatment to improve local blood circulation and relieve symptoms such as limb numbness and hemiplegia. This method of combining overall conditioning and local treatment reflects the ideas of the holistic concept and syndrome differentiation and treatment in traditional Chinese medicine, making the treatment more comprehensive and effective.

Comparison with Other Similar Formulas

1. Comparison with Xuefu Zhuyu Decoction

Xuefu Zhuyu Decoction It comes from another work by Wang Qingren, 'Corrections of Errors in Medicine'. It has the effects of promoting blood circulation and removing blood stasis, regulating qi and relieving pain. Compared with Buyang Huanwu Decoction, Xuefu Zhuyu Decoction focuses on promoting blood circulation and removing blood stasis, regulating qi and relieving pain, and is mainly used to treat chest pain, headache that has not healed for a long time caused by blood stasis blocking in the chest and qi stagnation. Its composition is mainly composed of drugs for promoting blood circulation and removing blood stasis, supplemented by qi-regulating products, such as Peach Kernel, Safflower, Angelica sinensis, Raw Rehmannia Root, Chuanxiong Rhizome, Red Peony Root, Achyranthes bidentata Root, Platycodon grandiflorum, Bupleurum chinense, Fructus Aurantii, and Licorice Root. While Buyang Huanwu Decoction mainly replenishes qi, supplemented by promoting blood circulation and removing blood stasis, dredging collaterals, and is mainly used to treat sequelae of stroke caused by qi deficiency and blood stasis. In its composition, the dosage of Astragalus membranaceus is particularly heavy, highlighting the role of qi supplementation.

2. Comparison with Tongjian Huoxue Decoction

Tongqiao Huoxue Decoction also comes from 'Corrections of Errors in Medicine', and its efficacy is to promote blood circulation and dredge the channels. It mainly treats the syndrome of blood stasis blocking the head and face, such as headache, dizziness, or deafness, hair loss, cyanotic complexion, or rosacea, or vitiligo, as well as dry blood tuberculosis in women, infantile malnutrition with emaciated muscles, prominent abdominal veins, and hectic fever. Tongqiao Huoxue Decoction focuses on dredging, and its composition includes Red Peony Root, Chuanxiong Rhizome, Peach Kernel, Safflower, Old Ginger, Fresh Ginger, Red Dates, and Musk. The medication is relatively drastic, mainly for dredging the channels and promoting blood circulation and removing blood stasis. Buyang Huanwu Decoction is relatively mild, with the main treatment method of replenishing qi, promoting blood circulation, and dredging collaterals, and is applicable to diseases with relatively mild qi deficiency and blood stasis and a relatively long course of disease.

3. Difference in Treatment Concepts with Buyang Huanwu Decoction

Buyang Huanwu Decoction Emphasize supplementing qi to promote blood circulation, focus on strengthening healthy qi and eliminating pathogenic factors, and improve the pathological state of qi deficiency and blood stasis by enhancing the healthy qi of the body, so as to achieve the purpose of treating diseases. Other similar prescriptions may focus more on promoting blood circulation to remove blood stasis or regulating qi to relieve pain and other aspects of effects, and are different from Buyang Huanwu Decoction in the treatment concept. This difference reflects the flexible application of traditional Chinese medicine prescriptions in treating different pathogenesis and diseases. Doctors need to carry out syndrome differentiation and treatment according to the specific conditions of patients and select the most suitable prescription for treatment.

VI. Clinical Applications and Indications

1. Sequelae of Stroke

Sequelae of stroke are the most common clinical application indications of Buyang Huanwu Decoction. For symptoms such as hemiplegia, limb numbness, deviation of the mouth and eyes caused by ischemic stroke, after the condition is stable, using Buyang Huanwu Decoction for treatment can effectively improve the limb function of patients and promote the recovery of nerve function. Generally speaking, patients with a shorter course of disease and obvious symptoms of qi deficiency and blood stasis have more significant effects after using Buyang Huanwu Decoction. In clinical application, it can be appropriately added or subtracted according to the specific symptoms of patients. For example, for those with partial disability of the upper limbs, mulberry branch and cassia twig can be added to dredge the channels of the upper limbs; for those with weakness and flaccidity of the lower limbs, achyranthes bidentata and eucommia ulmoides can be added to strengthen the muscles and bones.

2. Coronary Heart Disease

For patients with coronary heart disease who present symptoms such as chest distress, chest pain, and palpitations, and are accompanied by manifestations of qi deficiency and blood stasis, such as pale complexion, shortness of breath and fatigue, pale and dull tongue, thready and uneven pulse, etc., Buyang Huanwu Decoction can also be considered. In the formula, Astragalus membranaceus replenishes qi, which can enhance cardiac function and improve myocardial blood supply; drugs promoting blood circulation and removing stasis can dredge the coronary arteries, improve blood circulation, and relieve angina symptoms. Clinical studies have shown that the combination of Buyang Huanwu Decoction and western medicine in the treatment of coronary heart disease can improve clinical efficacy, reduce the frequency of angina attacks, and improve the quality of life of patients.

3. Cerebral Infarction

In the recovery period of stroke patients, there is often a pathological state of qi deficiency and blood stasis, manifested as hemiplegia, aphasia, cognitive impairment, etc. Buyang Huanwu Decoction can promote cerebral blood circulation, improve the symptoms of neurological deficit, and enhance the patient's daily living ability by supplementing qi, activating blood circulation and dredging collaterals. In the treatment of stroke, Buyang Huanwu Decoction can be used as an auxiliary therapeutic prescription, combined with the rehabilitation treatment of modern medicine to play a synergistic role and promote the recovery of patients.

VII. Modification and Variation

1. Addition and Subtraction of Upper Limb Symptoms

If symptoms such as pain, numbness, and restricted movement occur in the upper limbs, drugs such as Ramulus Mori, Ramulus Cinnamomi, Rhizoma seu Radix Notopterygii, and Rhizoma Curcumae Longae can be added. Ramulus Mori is good at dredging the channels and collaterals of the upper limb joints, dispelling wind and dampness, and dredging collaterals to relieve pain; Ramulus Cinnamomi is pungent, warm, and yang-promoting, can warm and dredge the channels and collaterals, dispel cold and relieve pain; Rhizoma seu Radix Notopterygii relieves exterior syndrome and dispels cold, dispels wind and dampness, and relieves pain, especially good at treating rheumatic arthralgia pain in the upper limbs; Rhizoma Curcumae Longae can promote blood circulation to remove blood stasis, promote qi movement, and dredge channels and relieve pain, and has good efficacy for pain caused by blood stasis obstruction in the upper limbs. Adding these drugs to Buyang Huanwu Decoction can enhance the effect of the formula in dredging the channels and collaterals of the upper limbs and relieving the symptoms of the upper limbs.

2. Addition and Subtraction of Lower Limb Symptoms

When symptoms such as flaccidity, weakness, swelling and pain occur in the lower limbs, drugs such as Achyranthes bidentata, Eucommia ulmoides, Chaenomeles sinensis and Angelica pubescens can be added. Achyranthes bidentata promotes blood circulation to remove blood stasis, tonifies the liver and kidney, strengthens the tendons and bones, induces diuresis and discharges stranguria, and guides blood downward, which can enhance the strength of the lower limbs and improve the symptoms of flaccidity in the lower limbs; Eucommia ulmoides tonifies the liver and kidney and strengthens the tendons and bones, and has a good conditioning effect on the weakness of the tendons and bones in the lower limbs; Chaenomeles sinensis relaxes the tendons and activates collaterals, regulates the stomach and resolves dampness, and can relieve muscle spasm and pain in the lower limbs; Angelica pubescens dispels wind and removes dampness, dredges collaterals and stops pain, and is good at treating rheumatism and arthralgia pain in the lower limbs. Through the addition and subtraction of these drugs, the symptoms of the lower limbs can be specifically improved.

3. Addition and Subtraction of Speech Disorders

For patients with speech impairment after stroke, drugs such as Acorus tatarinowii, Polygala tenuifolia, and Curcuma aromatica can be added. Acorus tatarinowii can open the orifices, resolve phlegm, awaken the mind and improve intelligence, and promote the restoration of language function; Polygala tenuifolia has the effects of calming the mind and improving intelligence, communicating the heart and kidney, reducing phlegm and detumescence, which helps to improve the patient's cognitive and language expression abilities; Curcuma aromatica can promote blood circulation to stop pain, promote qi movement to relieve depression, clear the heart and cool the blood, and promote bile secretion and remove jaundice, which can promote qi and blood circulation, improve the qi and blood supply to the brain, and has a certain therapeutic effect on speech impairment.

VIII. Dosage and Administration (Traditional Method and Modern Concentrated Granules)

1. Traditional Method (Decocted in Water)

When decocting and taking Buyang Huanwu Decoction by traditional methods, generally use four liang (120 g) of Astragalus membranaceus, two qian (6 g) of Angelica sinensis tail, one and a half qian (5 g) of Paeonia lactiflora, one qian (3 g) of Pheretima aspergillum, one qian (3 g) of Ligusticum chuanxiong, one qian (3 g) of Prunus persica, and one qian (3 g) of Carthamus tinctorius. For these seven herbs, use one dou of water, decoct to obtain three sheng, and take it warm in three equal portions. In modern clinical applications, the dosage of herbs can be adjusted according to the actual situation, but the dosage of Astragalus membranaceus should still be relatively large, generally 30 - 120 g, and the dosages of other herbs can be appropriately increased or decreased according to the condition. When decocting, first soak the herbs for about 30 minutes, then decoct with strong fire, and then change to slow fire and simmer for 30 - 40 minutes, take the decoction orally. Take one dose daily, in two divided doses.

2. Modern Concentrated Granules

Modern concentrated granules are prepared by extracting and concentrating traditional Chinese medicines into granule preparations, which are convenient to take. When using Buyang Huanwu Decoction concentrated granules, they can be taken冲服 according to the recommended dosage in the instruction manual. Generally speaking, the dosage of Huangrong concentrated granules is relatively large to ensure the effect of replenishing qi. The specific dosage can be adjusted according to factors such as the patient's age, constitution, and condition. Compared with traditional decoctions, concentrated granules retain the effective components of traditional Chinese medicines, are convenient to carry and store, and are suitable for the modern fast-paced lifestyle.

IX. Precautions and Contraindications

1. Medication Precautions for the Weak Physique

When the physically weak use Buyang Huanwu Decoction, especially when the dosage of Huangrong is large, they may experience discomfort symptoms such as abdominal distension and poor appetite. This is because Huangrong has a strong effect of replenishing qi, and for patients with weak spleen and stomach and poor transportation function, it may lead to an increased burden on the spleen and stomach. At this time, the dosage of Huangrong can be appropriately reduced, and some drugs for strengthening the spleen and regulating the stomach, such as Atractylodes macrocephala, Poria cocos, and Citrus reticulata, can be配伍 to reduce the possible adverse reactions of Huangrong, and at the same time enhance the transportation function of the spleen and stomach to ensure the absorption and efficacy of the drugs.

2. Pregnancy & Menstruation Taboo

Buyang Huanwu Decoction contains various drugs for promoting blood circulation and removing blood stasis, such as Radix Angelicae Sinensis (tail), Radix Paeoniae Rubra, Rhizoma Chuanxiong, Semen Persicae, and Flos Carthami. Taking it during pregnancy may cause fetal restlessness and even lead to serious consequences such as miscarriage. Taking it during menstruation may cause menstrual disorders such as excessive menstrual flow and prolonged menstrual period. Therefore, pregnant women and women during menstruation should strictly avoid using Buyang Huanwu Decoction.

3. Hemorrhagic Disease Caution

For patients with hemorrhagic diseases, such as thrombocytopenic purpura and hemophilia, the drugs for promoting blood circulation and removing blood stasis in Buyang Huanwu Decoction may aggravate the bleeding tendency and lead to the deterioration of the condition. Therefore, such patients should consult a doctor before using Buyang Huanwu Decoction, use the medicine cautiously, and avoid adverse consequences caused by improper medication.

X. Modern Research Progress

1. Impact on Nervous System

Modern research shows that Buyang Huanwu Decoction can improve cerebral ischemia-reperfusion injury, reduce nerve cell damage, and promote the recovery of nerve function. Its mechanism of action may be related to regulating neurotransmitters, inhibiting nerve cell apoptosis, and improving cerebral blood circulation. In animal experiments, after intervention with Buyang Huanwu Decoction, an increase in the expression of relevant neuroprotective factors in the brain tissue can be observed, the degree of nerve cell damage is reduced, and the behavioral indicators are also significantly improved. In addition, Buyang Huanwu Decoction can also be used to treat neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease, and has a certain effect on delaying the progression of the disease and improving the patient's symptoms by regulating neurotransmitters and improving nerve cell metabolism.

2. Effect on Cardiovascular System

Buyang Huanwu Decoction has various beneficial effects on the cardiovascular system. It can dilate the coronary arteries, increase coronary blood flow, improve myocardial blood supply, and thus relieve angina symptoms. At the same time, Buyang Huanwu Decoction can reduce blood viscosity, inhibit platelet aggregation, improve hemorheological indexes, and reduce the risk of thrombosis. In clinical studies, combining Buyang Huanwu Decoction with western medicines to treat cardiovascular diseases such as coronary heart disease and myocardial infarction can improve the treatment effect, reduce the incidence of cardiovascular events, and improve the prognosis of patients. In addition, Buyang Huanwu Decoction also has a certain regulatory effect on hypertension, and may reduce blood pressure through mechanisms such as improving vascular endothelial function and reducing peripheral vascular resistance.

3. Immune Regulatory Function

Research has found that Buyang Huanwu Decoction has a certain immunomodulatory effect. It can enhance the immune function of the body, improve the resistance of the body, and has a good conditioning effect on patients with low immune function. Buyang Huanwu Decoction may play an immunomodulatory role by regulating the activity of immune cells and promoting the secretion of immune factors. In the treatment of some chronic diseases, such as chronic bronchitis and rheumatoid arthritis, Buyang Huanwu Decoction can be used as an adjuvant treatment prescription to regulate the body's immune function, reduce the inflammatory response, and improve the quality of life of patients.

4. Other Effects

In addition to its effects on the nervous system, cardiovascular system, and immune system, Buyang Huanwu Decoction also shows certain research value in other aspects. For example, it also has a certain regulatory effect on the digestive system and urinary system. In the digestive system, Buyang Huanwu Decoction can promote gastrointestinal motility, improve digestive function, and relieve symptoms such as indigestion. In the urinary system, it may have a certain protective effect on kidney function, improve renal blood circulation, and reduce kidney damage. In addition, there are also relevant research reports on Buyang Huanwu Decoction in anti-tumor and antioxidant aspects, and its potential medicinal value remains to be further explored in depth.

As a classic prescription in traditional Chinese medicine, Buyang Huanwu Decoction has withstood the test of centuries of clinical practice, possessing rich connotations and remarkable efficacy. With the continuous deepening of modern research, its mechanism of action in multiple fields has been gradually revealed, providing a broader prospect for the further development and application of this prescription. It is believed that in the future, Buyang Huanwu Decoction will play an important role in the treatment of more diseases and make greater contributions to human health.