Sheng Yu Tang (圣愈汤), known in English as Holy Recovery Decoction, is a classical TCM formula for tonifying Qi and Blood to stop bleeding and promote recovery. It is particularly indicated for Qi and Blood deficiency causing uterine bleeding, prolonged lochia, postpartum weakness, or slow recovery after illness or surgery. In modern clinical practice, Sheng Yu Tang is used for postpartum recovery and conditions involving Qi and Blood deficiency with bleeding due to failure to contain Blood. By combining Si Jun Zi Tang to tonify Qi and Si Wu Tang to nourish Blood, it rebuilds strength and enables the body to contain Blood and recover from depletion.

I. Origins and History

1. Background of Origins

Sheng Yu Tang originates from the Lanshi Micang (Secret Treasury of the Orchid Chamber), authored by the celebrated Jin-Yuan period physician Li Dongyuan. Li Dongyuan lived in an era of frequent warfare and hardship for the common people, witnessing many who fell ill from overwork and depletion. Through prolonged clinical practice, he conducted in-depth research into the relationship between the body's qi, blood, yin, and yang and the mechanisms underlying disease onset and progression, summarising a series of formulas for deficiency patterns — Sheng Yu Tang being one of the most representative among them. Society at that time was turbulent, and people laboured excessively; combined with factors such as dietary irregularity and emotional disturbance, conditions of qi-blood weakness and impaired zang-fu organ function were relatively common. The emergence of Sheng Yu Tang provided an effective treatment method for this category of deficiency-pattern patients.

2. Historical Transmission and Development

Since the publication of the Lanshi Micang, Sheng Yu Tang has been widely applied in Chinese medicine clinical practice and transmitted through the generations. Later physicians, building upon Li Dongyuan's academic thought, continued to research and apply Sheng Yu Tang in practice. As the times changed, people's understanding of disease and treatment needs also shifted, yet Sheng Yu Tang, owing to its definite therapeutic effect, has consistently held an important place within the treasury of Chinese medicine formulas. During the Ming and Qing dynasties, numerous physicians recorded and supplemented the application experience of Sheng Yu Tang in their writings, making its clinical application richer and more refined. For example, some physicians adjusted the herb dosages according to the characteristics of different conditions; others combined the advantages of other formulas, modifying Sheng Yu Tang accordingly, further expanding its scope of application.

II. Herb Composition (Sovereign, Minister, Assistant, Envoy)

1. Chief Herbs — Renshen (Ginseng) and Huangqi (Astragalus Root)

Renshen is sweet and slightly bitter in flavour and slightly warm in nature, entering the Spleen, Lung, Heart, and Kidney channels. It has the actions of greatly tonifying source qi, restoring the pulse and rescuing from collapse, tonifying the spleen and benefiting the lungs, generating fluids and nourishing blood, and calming the spirit and boosting intelligence. In Sheng Yu Tang, Renshen serves as a chief herb, with its primary role being to greatly tonify source qi, providing a sufficient material foundation for the generation of qi and blood. The body's source qi is the driving force of life activity; when source qi is sufficient, the zang-fu organs function normally and qi and blood have a source for transformation and generation. Huangqi is sweet in flavour and slightly warm in nature, entering the Spleen and Lung channels. It can tonify qi and raise yang, consolidate the exterior and stop perspiration, promote urination and reduce swelling, generate fluids and nourish blood, move stagnation and unblock painful obstruction, expel toxin and discharge pus, and astringe sores to generate new flesh. Combined with Renshen, Huangqi reinforces the qi-tonifying potency, further supplementing the body's righteous qi and allowing qi and blood to be sufficiently transformed and generated. The two together serve as chief herbs, laying the foundation for the formula's qi-and-blood-tonifying action.

2. Deputy Herbs — Shudihuang (Prepared Rehmannia Root) and Danggui (Angelica Root)

Shudihuang is sweet in flavour and slightly warm in nature, entering the Liver and Kidney channels. It has the actions of nourishing yin and tonifying blood, and boosting essence and filling the marrow. It is the foremost herb for nourishing yin and tonifying blood, capable of supplementing liver and kidney yin-blood, allowing the yin-blood to become sufficient so as to nourish the zang-fu organs and tissues throughout the body. Danggui is sweet and acrid in flavour and warm in nature, entering the Liver, Heart, and Spleen channels. It has the actions of tonifying blood and activating blood, regulating menstruation and relieving pain, and moistening the intestines to unblock the bowels. Danggui can both tonify blood and activate blood, ensuring tonification without stagnation. In Sheng Yu Tang, Shudihuang and Danggui serve as deputy herbs, assisting the chief herbs in reinforcing the yin-nourishing and blood-tonifying action; simultaneously, Danggui's blood-activating action also promotes the circulation of qi and blood, allowing the tonified qi and blood to better nourish the entire body.

3. Assistant Herb — Chuanxiong (Chuanxiong Rhizome)

Chuanxiong is acrid in flavour and warm in nature, entering the Liver, Gallbladder, and Pericardium channels. It has the actions of activating blood and moving qi, and dispelling wind to relieve pain. It performs the role of assistant herb within the formula: on one hand, Chuanxiong's blood-activating and qi-moving potency can assist Danggui in reinforcing the blood-activating action, ensuring more unobstructed qi-blood circulation and avoiding qi-blood stasis caused by tonification; on the other hand, its wind-dispelling and pain-relieving action can relieve symptoms such as headache caused by qi-blood insufficiency, while also regulating qi movement, allowing the various herbs to better exert their synergistic effects.

4. Envoy Herb — Zhigancao (Honey-fried Licorice Root)

Zhigancao is sweet in flavour and neutral in nature, entering the Heart, Lung, Spleen, and Stomach channels. It has the actions of tonifying the spleen and harmonising the stomach, and boosting qi and restoring the pulse. Zhigancao, as the envoy herb in Sheng Yu Tang, harmonises all the herbs, allowing the various medicinals within the formula to work synergistically and exert their optimal therapeutic effect. Simultaneously, it can tonify the spleen and boost qi, reinforcing the formula's overall tonifying action, while also moderating the potent nature of the herbs within the formula, making the entire formula's medicinal nature balanced and easy to take.

III. Pathomechanism, Actions, and Indications

1. Pathomechanism Analysis

The pathomechanism targeted by Sheng Yu Tang is primarily qi-blood weakness. Factors such as excessive overwork and chronic illness weakening the body can lead to insufficient transformation and generation of qi and blood within the body, or excessive depletion, resulting in a pattern of dual qi-blood deficiency. Qi and blood are the important material foundation of the body's life activities; when qi and blood are insufficient, zang-fu organ function declines and the channels lose nourishment, which may give rise to numerous conditions. For example, qi deficiency leads to decline of zang-fu organ function, manifesting as shortness of breath, fatigue, and spontaneous sweating; blood deficiency fails to nourish the heart-spirit, head and eyes, and limbs, which may lead to palpitations with insomnia, dizziness and blurred vision, and numbness of the limbs.

2. Actions

Sheng Yu Tang has the action of tonifying qi and nourishing blood. Within the formula, Renshen and Huangqi greatly tonify source qi, serving as the foremost herbs for tonifying qi; Shudihuang and Danggui nourish yin and tonify blood, serving as excellent herbs for nourishing blood. The four herbs used together doubly tonify qi and blood, ensuring the body's qi and blood become sufficient, zang-fu organ function is restored, and the channels are nourished, thereby achieving the goal of supporting the righteous and expelling the pathogen.

3. Indications

Sheng Yu Tang is indicated for numerous conditions caused by qi-blood weakness. Common manifestations include a lustreless complexion, dizziness and blurred vision, palpitations with fearful throbbing, insomnia and forgetfulness, shortness of breath with fatigue, and pale lips and nails. In addition, for women with early menstruation, excessive flow with pale colour, or unresolved postpartum lochia, a pale complexion, and fatigue with lassitude caused by qi-blood depletion, Sheng Yu Tang also produces good therapeutic results. In surgery, for sores and ulcers that fail to heal over a prolonged period due to insufficient qi and blood, with qi-blood weakness and decline, the use of Sheng Yu Tang can promote wound healing and strengthen the body's resistance.

IV. Formula Analysis

1. The Principle of Doubly Tonifying Qi and Blood

Sheng Yu Tang combines qi-tonifying herbs with blood-tonifying herbs, embodying the treatment method of doubly tonifying qi and blood. Qi is the commander of blood; qi can generate blood, move blood, and govern blood; blood is the mother of qi; blood can carry qi and nourish qi. Within the formula, Renshen and Huangqi tonify qi, promoting the generation of blood; Shudihuang and Danggui tonify blood, in turn nourishing qi. Chuanxiong activates blood and moves qi, helping the circulation of qi and blood, ensuring tonification without stagnation; Zhigancao harmonises all the herbs while also tonifying the spleen and boosting qi, reinforcing the source of qi-blood transformation and generation. The combination of the whole formula allows qi and blood to mutually nourish and mutually promote one another, jointly achieving the goal of tonifying qi and blood.

2. Synergistic Action of Sovereign, Minister, Assistant, and Envoy

The chief herbs Renshen and Huangqi greatly tonify source qi, leading the entire formula and forming the core force for tonifying qi and blood. The deputy herbs Shudihuang and Danggui nourish yin and tonify blood, assisting the chief herbs in reinforcing the yin-nourishing and blood-tonifying potency, ensuring qi and blood become sufficient. The assistant herb Chuanxiong activates blood and moves qi, preventing qi-blood stasis caused by excessive tonification, while simultaneously regulating qi movement, ensuring unobstructed circulation of qi and blood. The envoy herb Zhigancao harmonises all the herbs, moderating the medicinal nature, and reinforcing the spleen-tonifying and qi-boosting potency, allowing the entire formula's combination to be rigorously structured, synergistically exerting the action of tonifying qi and nourishing blood.

V. Comparison with Related Formulas

1. Bazhen Tang

Bazhen Tang is composed of eight herbs — Renshen, Baizhu (Atractylodes Rhizome), Fuling (Poria), Gancao, Danggui, Chuanxiong, Baishaoyao (White Peony Root), and Shudihuang — with the action of boosting qi and tonifying blood. Compared with Sheng Yu Tang, Bazhen Tang's qi-tonifying herbs additionally include Baizhu and Fuling, giving it a stronger spleen-strengthening and qi-boosting potency, placing emphasis on dual qi-blood deficiency accompanied by spleen-stomach weakness. Sheng Yu Tang, by contrast, places relatively greater emphasis on simple qi-blood weakness, with its qi-tonifying herbs being primarily Renshen and Huangqi, and its blood-tonifying herbs being primarily Shudihuang and Danggui — on the foundation of doubly tonifying qi and blood, it places greater emphasis on the action of tonifying qi to generate blood.

2. Guipi Tang

Guipi Tang has the actions of boosting qi and tonifying blood, and strengthening the spleen and nourishing the heart, with an herb composition including Renshen, Baizhu, Huangqi, Danggui, Fushen (Poria with Pine Root), Yuanzhi (Polygala Root), Suanzaoren (Ziziphus Seed), Muxiang (Costus Root), Longyanrou (Longan Flesh), Zhigancao, Shengjiang (Fresh Ginger), and Dazao (Jujube). Guipi Tang focuses on strengthening the spleen and nourishing the heart, suited to patients with dual heart-spleen deficiency and qi-blood insufficiency, with more prominent spirit-mind restlessness symptoms such as palpitations, insomnia, and forgetfulness. Sheng Yu Tang, by contrast, primarily tonifies the overall state of qi-blood weakness, with relatively weaker regulation of spirit-mind symptoms.

VI. Clinical Applications

1. Internal Medicine Disorders

In treating anaemia, Sheng Yu Tang may be used for conditions such as iron-deficiency anaemia and megaloblastic anaemia caused by insufficient qi and blood. Patients typically present with symptoms such as a sallow or pale complexion, dizziness and blurred vision, and palpitations with shortness of breath; after taking Sheng Yu Tang for a period of time, blood count indicators may improve and anaemia symptoms gradually diminish. For chronic fatigue syndrome, if the pattern is identified as qi-blood weakness type, with patients presenting with prolonged fatigue, low spirits, and shortness of breath with disinclination to speak, Sheng Yu Tang can, through tonifying qi and nourishing blood, strengthen the body's energy metabolism, improve the fatigued state, and enhance quality of life.

2. Gynaecological Disorders

Menstrual irregularities are a common gynaecological condition; Sheng Yu Tang has good therapeutic effects for early menstruation and excessive flow with pale colour caused by qi-blood weakness. Through regulating qi and blood, the menstrual cycle can be restored to normal, the menstrual flow becomes appropriate, and the colour and quality improve. For unresolved postpartum lochia, if caused by qi-blood depletion with failure to consolidate, leading to continuous, scanty, thin discharge accompanied by symptoms such as a pale complexion and fatigue with lassitude, applying Sheng Yu Tang can tonify qi and nourish blood, promote the expulsion of lochia, and accelerate bodily recovery.

3. Surgical Disorders

Following surgery or trauma, if the patient presents with manifestations of qi-blood weakness — such as slow wound healing, a lustreless complexion, and shortness of breath with spontaneous sweating — Sheng Yu Tang may serve as an adjunctive treatment formula. It can strengthen the body's resistance, promote qi-blood circulation, and provide a favourable qi-blood environment for wound healing, reducing the occurrence of postoperative complications. For certain chronic sore and ulcer conditions, such as carbuncles and abscesses that fail to close after rupture for a prolonged period, Sheng Yu Tang can tonify qi and blood, expel toxin outward, and promote wound healing.

VII. Clinical Modifications

1. Pronounced Qi Deficiency

If the patient's qi-deficiency symptoms are more prominent — such as more severe shortness of breath and fatigue — the dosage of Renshen and Huangqi may be increased to reinforce the qi-tonifying potency. Baizhu may also be added to reinforce the spleen-strengthening and qi-boosting action, ensuring qi has a source for generation; when qi is sufficient, blood becomes abundant.

2. Pronounced Blood Deficiency

When blood-deficiency symptoms are pronounced — such as a worsening pale complexion and dizziness with blurred vision — the dosage of Shudihuang and Danggui may be increased to further nourish blood and yin. Ejiao (Donkey-hide Gelatin) may also be added; its blood-tonifying and yin-nourishing action is relatively strong, allowing blood-deficiency symptoms to be better improved.

3. Concurrent Blood Stasis

If the patient has concurrent blood-stasis symptoms — such as localised pain, stabbing pain, and a dark purple tongue — Taoren (Peach Kernel) and Honghua (Safflower) may be added to the formula to reinforce the blood-activating and channel-unblocking potency, ensuring more unobstructed qi-blood circulation and avoiding stasis retention caused by tonification.

4. Concurrent Insomnia

For those with concurrent insomnia symptoms, Suanzaoren (Ziziphus Seed) and Baiziren (Arborvitae Seed) may be added to nourish the heart and calm the spirit, improving sleep quality, nourishing the heart-spirit, and ensuring the source for qi-blood transformation and generation.

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

1. Traditional Method

The traditional administration of Sheng Yu Tang is by water decoction. The general herb composition and dosage are: Renshen (stewed separately) 9 g, Huangqi 12 g, Shudihuang 15 g, Danggui 9 g, Chuanxiong 6 g, and Zhigancao 6 g. Soak the herbs for approximately 30 minutes, then add an appropriate amount of water; first bring to the boil over a high flame, then switch to a low flame and decoct slowly for 30–40 minutes, yielding approximately 200 ml of liquid, taken warm in two divided doses, one dose per day. Renshen is stewed separately to better realise its therapeutic effect, avoiding destruction of its active constituents when co-decocted with the other herbs.

2. Modern Concentrated Granules

Concentrated granule preparations of Sheng Yu Tang are also available on the modern market. The method of administration is relatively simple, generally dissolved in boiled water according to the dosage specified in the product instructions. For example, for one brand's Sheng Yu Tang concentrated granules, the dosage per dose is the combined total of the concentrated granules for each herb, typically taken as one sachet per dose, twice daily. The concentrated granule form preserves the therapeutic effect of the traditional formula while being convenient to carry and take, suited to the fast-paced modern lifestyle.

IX. Precautions and Contraindications

1. Dietary Restrictions

During the course of taking Sheng Yu Tang, raw, cold, greasy, and spicy irritating foods should be avoided. Raw, cold foods such as cold drinks and raw fish slices readily damage the spleen-stomach yang qi, affecting the spleen-stomach's transformation and absorption of the herbs; greasy foods such as fried foods and fatty meat are difficult to digest and add burden to the spleen and stomach; spicy foods such as chilli peppers and Sichuan peppercorns readily stir fire and generate heat, which may conflict with the formula's tonifying action and affect its therapeutic efficacy.

2. Special Populations

Pregnant women should use Sheng Yu Tang with caution. Although the formula has the action of tonifying qi and nourishing blood, medication during pregnancy requires caution, and whether to use it should be decided according to the specific circumstances under medical guidance. Paediatric dosages should be appropriately adjusted according to age and constitution, generally requiring administration under medical guidance. If elderly patients have other concurrent chronic conditions, such as hypertension or diabetes, they should closely monitor changes in their condition while taking Sheng Yu Tang, and seek medical attention promptly if discomfort occurs.

3. Precautions During Medication

Changes in one's own symptoms should be observed during the course of medication. If symptoms such as abdominal distension and indigestion appear after taking the formula, this may indicate spleen-stomach weakness with insufficient transforming and transporting capacity, and the dosage may be appropriately reduced or spleen-strengthening and digestion-promoting herbs added. If symptoms of internal heat appear — such as dry mouth and tongue, and sore, swollen throat — this may indicate excessive tonification by the herbs; medication should be temporarily discontinued, and the dosage or combination adjusted once symptoms have resolved.

X. Modern Research

1. Pharmacological Research

Sheng Yu Tang is a blood-tonifying and blood-nourishing formula, modified from Siwu Tang; the Shengdihuang (Fresh Rehmannia Root) and Danggui Shen (Angelica Root Body) within the formula have the actions of nourishing yin, nourishing blood, clearing heat, and cooling blood, suited to fever from blood deficiency and postpartum blood deficiency, among other patterns.

Modern research has demonstrated that Renshen within Sheng Yu Tang contains various active constituents such as ginsenosides, possessing actions including strengthening immunity, combating fatigue, and regulating the nervous system. Huangqi can improve the body's immune function, strengthen myocardial contractility, and improve blood circulation. Shudihuang has actions including nourishing yin, tonifying blood, and regulating the endocrine system. Danggui can promote haematopoietic function and improve blood rheology indicators. Chuanxiong has actions including dilating blood vessels and improving microcirculation. Zhigancao has anti-inflammatory and antiallergic actions. These herbs, combined together, jointly exert the actions of tonifying qi, nourishing blood, and regulating bodily function.

2. Clinical Efficacy Verification

Multiple clinical studies have confirmed the effectiveness of Sheng Yu Tang in treating conditions related to qi-blood weakness. For example, in research on treating iron-deficiency anaemia, observation found that patients taking Sheng Yu Tang showed marked improvement in indicators such as haemoglobin level and serum ferritin, with anaemia symptoms relieved. In treating gynaecological menstrual irregularities, applying Sheng Yu Tang can regulate the menstrual cycle and improve menstrual flow and colour/quality, with a relatively high overall effectiveness rate. For patients with chronic fatigue syndrome, Sheng Yu Tang can significantly improve patients' physical strength and mental state, with quality of life markedly enhanced.

3. Exploration of Mechanism of Action

Further exploration of the mechanism of action of Sheng Yu Tang from a modern medical perspective has found that it may exert its effects through regulating the body's neuro-endocrine-immune network. Qi-and-blood-tonifying herbs can regulate the secretion of neurotransmitters, improve endocrine function, and enhance the activity of immune cells, thereby strengthening the body's overall disease-resistance capacity. In addition, Sheng Yu Tang may also have a promoting action on the proliferation and differentiation of haematopoietic stem cells, increasing the number of red blood cells, white blood cells, and other constituents within the blood, improving the state of qi-blood insufficiency. As research continues to deepen, the mechanism of action of Sheng Yu Tang will become clearer, providing a more solid theoretical foundation for its clinical application.