San Yu He Shang Tang

Disperse Stasis and Harmonize Injury Decoction · 散瘀和傷湯

Also known as: San Yu He Shang Tang, Disperse Stasis Harmonize Injury Wash

An external wash formula from traditional Chinese bone-setting medicine, used to treat swelling, bruising, and pain from traumatic injuries such as falls, collisions, and sprains. The herbs are boiled with vinegar and applied as a hot steam and wash over the injured area to break up blood stasis, reduce swelling, and promote healing. It is not taken internally.

Origin Yi Zong Jin Jian (医宗金鉴), Volume 88 — Qīng dynasty, 1742 CE
Composition 6 herbs
Hong Hua
King
Hong Hua
Fa
Deputy
Fan Mu Bie (番木鳖 / Ma Qian Zi)
Ban Xia
Deputy
Ban Xia
Gu Sui Bu
Assistant
Gu Sui Bu
Long Gu
Assistant
Long Gu
Gan Cao
Envoy
Gan Cao
Explore composition

Educational content Consult qualified TCM practitioners for diagnosis and treatment

Patterns Addressed

In TCM, symptoms don't appear randomly — they cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. San Yu He Shang Tang is designed to correct these specific patterns.

Why San Yu He Shang Tang addresses this pattern

Traumatic injury from impact or collision causes blood to leave its normal pathways and accumulate in the local tissues, creating blood stasis (Yu Xue). When stasis blocks the channels and network vessels, Qi and blood cannot flow freely, leading to swelling, pain, and restricted movement. This formula directly targets that stasis through external application: Hong Hua activates blood circulation to dispel the accumulated stagnant blood, while Fan Mu Bie and Sheng Ban Xia powerfully break up clumps and disperse nodular stasis in the network vessels. Gu Sui Bu supports the healing of the underlying bone and sinew damage. The hot steaming and washing method, enhanced by vinegar and Cong Xu, drives the medicinal action through the skin to the site of injury.

A practitioner would look for one or more of these signs

Swelling

Local swelling at the site of injury from accumulated stagnant blood

Pain Worsened By Pressure

Fixed, localized pain at the injury site that is worse with pressure

Bruising

Dark or purplish discoloration of the skin over the injured area

Limited Range Of Motion

Stiffness or restricted movement of the affected area

Commonly Prescribed For

These conditions can arise from the patterns above. A practitioner would consider San Yu He Shang Tang when these conditions are specifically caused by those patterns — not for all cases of these conditions.

Arises from: Blood Stasis

TCM Interpretation

In TCM, soft tissue injuries from falls, collisions, or blows cause blood to escape from the vessels and pool in the local tissues. This creates a condition called blood stasis, where stagnant blood blocks the channels and network vessels, preventing normal Qi and blood circulation. The classic teaching states that 'when form is injured there is swelling, when Qi is injured there is pain,' meaning that physical damage disrupts both the structure and the vital flow in the affected area. If this stasis is not resolved, it can lead to chronic pain, stiffness, and impaired healing.

Why San Yu He Shang Tang Helps

San Yu He Shang Tang is specifically designed as an external wash for traumatic injuries. Hong Hua directly invigorates the blood and dispels stasis at the injury site. Fan Mu Bie (processed Nux Vomica) and raw Ban Xia powerfully break up clumped stagnation and reduce swelling. The hot steaming and washing method drives the medicinal action through the skin, and the vinegar added during preparation enhances penetration and the blood-moving effect. Cong Xu opens the surface channels to facilitate this process. Meanwhile, Gu Sui Bu supports structural healing of bone and sinew. This combination provides comprehensive topical treatment that both resolves acute stasis and supports tissue repair.

Also commonly used for

Bone Fractures

Used in later stages of fracture recovery to reduce residual swelling and promote healing

Joint Dislocation

Applied after reduction of joint dislocation to address residual stasis and pain

Arthritis

Channel and sinew pain from Wind-Cold-Damp obstruction with underlying blood stasis

What This Formula Does

Every TCM formula has a specific set of actions — here's what San Yu He Shang Tang does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, San Yu He Shang Tang is primarily used to support these areas of health:

TCM Actions

In TCM terminology, these are the specific therapeutic actions that San Yu He Shang Tang performs to restore balance in the body:

How It Addresses the Root Cause

TCM doesn't just suppress symptoms — it aims to resolve the underlying imbalance. Here's how San Yu He Shang Tang works at the root level.

This formula addresses the consequences of traumatic physical injury (跌扑损伤). When the body suffers a blow or collision, the local channels and blood vessels are damaged. Blood escapes its normal pathways and pools in the surrounding tissues, forming what TCM calls Blood stasis (瘀血). This stagnant blood obstructs the smooth flow of Qi and Blood through the affected channels and collaterals.

As the classical principle states: "When the form is injured, there is swelling; when Qi is injured, there is pain" (形伤肿,气伤痛). The physical trauma damages the body's structure, causing swelling from accumulated stagnant blood. Simultaneously, the disruption of Qi circulation produces pain. The longer the stasis persists, the more the local channels become blocked, leading to stiffness, restricted movement, and chronic aching. The pathology is one of excess and obstruction: the stagnant blood and bruised tissue must be actively dispersed for healing to proceed.

Because this is an external wash formula, its mechanism works from the outside in. The hot decoction combined with vinegar opens the pores and superficial channels through steam and warmth, allowing the medicinal properties to penetrate to the site of injury. This approach directly reaches the local area of Blood stasis without burdening the digestive system or the body's internal organ systems.

Formula Properties

Every formula has an inherent temperature, taste, and affinity for specific organs — these properties determine how it interacts with the body

Overall Temperature

Warm

Taste Profile

Predominantly acrid and bitter, with the acrid nature to disperse and move Blood stasis, and the bitter quality to break through stagnation and reduce swelling.

Target Organs

Channels Entered

Ingredients

6 herbs

The herbs that make up San Yu He Shang Tang, organized by their role in the prescription

King — Main ingredient driving the formula
Deputy — Assists and enhances the King
Assistant — Supports or moderates other herbs
Envoy — Directs the formula to its target
King — Main ingredient driving the formula
Hong Hua

Hong Hua

Safflowers

Dosage 15g
Temperature Warm
Taste Pungent
Organ Affinity Heart, Liver

Role in San Yu He Shang Tang

Activates blood circulation and dispels blood stasis, the primary therapeutic action of this formula for traumatic injury. As the main blood-moving herb, it directly addresses the core pathomechanism of stagnant blood accumulating in the channels after impact.
Deputies — Assists and enhances the King
Fa

Fan Mu Bie (番木鳖 / Ma Qian Zi)

Dosage 15g
Preparation Oil-fried with hairs removed (油炸去毛)

Role in San Yu He Shang Tang

Opens the channels and collaterals, disperses clumps, reduces swelling, and stops pain. Its strong ability to penetrate the network vessels and break up stagnation powerfully supports the King herb's blood-moving action. Processed by deep-frying in oil with the hairs removed to reduce toxicity.
Ban Xia

Ban Xia

Crow-dipper rhizomes

Dosage 15g
Temperature Warm
Taste Pungent
Organ Affinity Lungs, Spleen, Stomach
Preparation Used raw/unprocessed (生用) — for external use only in this formula

Role in San Yu He Shang Tang

In its raw (unprocessed) form used externally, it disperses nodules, reduces swelling, and alleviates pain. It assists the King and Deputy herbs in breaking up clumped blood stasis and reducing local swelling at the injury site.
Assistants — Supports or moderates other herbs
Gu Sui Bu

Gu Sui Bu

Drynaria rhizomes

Dosage 9g
Temperature Warm
Taste Bitter
Organ Affinity Kidneys, Large Intestine, Liver

Role in San Yu He Shang Tang

Tonifies the Kidneys and strengthens bone and sinew. Its name literally means 'mender of shattered bone,' reflecting its specific action of promoting the healing of damaged bones and connective tissue. It addresses the underlying structural injury while the other herbs focus on stasis.
Long Gu

Long Gu

Dragon bones

Dosage 30g
Temperature Neutral
Taste Sweet
Organ Affinity Heart, Kidneys, Liver

Role in San Yu He Shang Tang

The roots of scallion/green onion open the channels and network vessels, disperse stagnation, and promote the movement of Qi and blood at the surface level. When combined with vinegar in the wash, it enhances the formula's penetrating action through the skin to reach the injured tissues.
Envoy — Directs the formula to its target
Gan Cao

Gan Cao

Liquorice

Dosage 9g
Temperature Neutral
Taste Sweet
Organ Affinity Heart, Lungs, Spleen, Stomach

Role in San Yu He Shang Tang

Harmonizes all the other herbs in the formula and moderates the potentially harsh or toxic properties of Fan Mu Bie and raw Ban Xia, ensuring the formula is safe for repeated topical application.

Why This Combination Works

How the herbs in San Yu He Shang Tang complement each other

Overall strategy

Traumatic injury causes blood to leave the vessels and stagnate locally in the channels and flesh, producing swelling and pain. This formula uses a combination of blood-moving, channel-opening, and stagnation-dispersing herbs applied externally as a hot wash to break up accumulated stasis and restore local circulation, thereby relieving pain and promoting healing.

King herbs

Hong Hua (Safflower) serves as the King, directly activating blood and dispelling stasis. It is the classic herb for invigorating blood circulation in traumatic injuries, addressing the root cause of the pain and swelling.

Deputy herbs

Fan Mu Bie (Nux Vomica, processed) powerfully opens the network vessels and disperses clumps, with a strong pain-relieving effect. It penetrates deeply into the channels to break up stubborn stasis that Hong Hua alone may not fully resolve. Sheng Ban Xia (raw Pinellia) in its unprocessed form is used here for its external action of dispersing nodules and reducing swelling, complementing Fan Mu Bie's clump-breaking ability.

Assistant herbs

Gu Sui Bu (Drynaria Rhizome) is a reinforcing assistant that tonifies the Kidneys and strengthens bone and sinew, promoting the repair of damaged structural tissue. Cong Xu (Scallion Root) acts as a reinforcing assistant that opens the superficial channels and promotes the movement of Qi to the body surface, enhancing the penetration of the other herbs through the skin during the wash.

Envoy herbs

Gan Cao (Licorice) harmonizes all the herbs and importantly moderates the toxicity of Fan Mu Bie and raw Ban Xia, making the formula safe for repeated external application.

Notable synergies

The addition of vinegar (Cu) to the boiling decoction is a critical part of the formula's design. Vinegar enters the Liver channel and enhances the blood-moving action of the herbs while also acting as a vehicle to help the medicinal compounds penetrate the skin. The combination of Cong Xu with vinegar creates a strong channel-opening and stasis-dispersing effect at the surface level. The pairing of Fan Mu Bie with Sheng Ban Xia provides a powerful dual action against both swelling and deep-seated nodular stasis.

How to Prepare

Traditional preparation instructions for San Yu He Shang Tang

Combine all herbs with five bowls of water and bring to a rolling boil. Add approximately 60 ml (two liang) of vinegar, then continue boiling for another 10 or more minutes. Use the hot decoction liquid to steam and wash the injured area. Repeat multiple times daily (traditionally described as ten or more times per day; in modern practice, 3 to 4 times daily is standard). Each time, reheat the decoction liquid to boiling before use. The liquid is for external application only and must not be taken internally.

Common Modifications

How practitioners adapt San Yu He Shang Tang for specific situations

Added
Ru Xiang

9g — activates blood, moves Qi, and reduces swelling

Mo Yao

9g — dispels stasis, reduces swelling, and stops pain

Ru Xiang and Mo Yao are the classic pair for traumatic injury pain and swelling, powerfully enhancing the formula's blood-moving and pain-relieving action.

Educational content — always consult a qualified healthcare provider or TCM practitioner before using any herbal formula.

Contraindications

Situations where San Yu He Shang Tang should not be used or requires extra caution

Avoid

Open wounds or broken skin at the site of application. This is an external wash formula containing toxic herbs (Fan Mu Bie / Nux Vomica) and raw Sheng Ban Xia, which must not contact open wounds or mucous membranes.

Avoid

Internal ingestion. This formula is strictly for external fumigation and washing (熏洗) only. Oral consumption is extremely dangerous due to the presence of Fan Mu Bie (Nux Vomica), which contains strychnine and brucine, both potent neurotoxins.

Caution

Patients with known hypersensitivity to any of the herbs, or those with skin conditions such as eczema or dermatitis at the application site, should avoid use as the external wash may cause irritation or absorption of toxic alkaloids.

Caution

Patients with liver or kidney disease should use with caution, as even topical application of strychnine-containing preparations carries some risk of systemic absorption.

Avoid

Patients with a history of seizures or epilepsy should avoid use, due to the convulsant properties of strychnine in Fan Mu Bie (Nux Vomica).

Caution

Extended or excessive use over large body surface areas should be avoided to minimize systemic absorption of toxic alkaloids.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Contraindicated during pregnancy. Fan Mu Bie (Nux Vomica / Semen Strychni) contains strychnine and brucine, which are highly toxic alkaloids that can be absorbed through the skin during fumigation and washing. Even topical exposure to strychnine poses risks of neurotoxicity. Sheng Ban Xia (raw Pinellia) is also classified as toxic in TCM and is traditionally prohibited in pregnancy. Although this is an external-use formula, the risk of transdermal absorption of these dangerous substances makes it unsuitable for pregnant women. If traumatic injury treatment is needed during pregnancy, safer alternatives should be sought under professional guidance.

Breastfeeding

Not recommended during breastfeeding. Fan Mu Bie (Nux Vomica) contains strychnine and brucine, which are classified as highly toxic and potentially lethal. Although this formula is used externally as a wash, there is a possibility of transdermal absorption of these alkaloids. No data exist on the excretion of strychnine into breast milk following topical exposure. Given the extreme toxicity of strychnine even in small amounts and its potential to accumulate in the body, this formula should be avoided by breastfeeding mothers. If external trauma treatment is needed, safer herbal washes without neurotoxic ingredients should be used instead.

Children

This formula should not be used in children. Fan Mu Bie (Nux Vomica) contains strychnine and brucine, which are extremely dangerous neurotoxins. Children have higher skin surface-area-to-body-weight ratios, meaning proportionally greater transdermal absorption of toxic alkaloids during fumigation and washing. Children are also more susceptible to strychnine toxicity, with a lower threshold for convulsions and respiratory failure. The risk-to-benefit ratio is particularly unfavorable in pediatric patients. If external treatment for traumatic injury is needed in children, practitioners should select non-toxic herbal wash formulas instead.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with San Yu He Shang Tang

Fan Mu Bie (Nux Vomica / Semen Strychni): Contains strychnine and brucine, which act as glycine receptor antagonists in the central nervous system. Even with topical application, if any systemic absorption occurs, there is potential for dangerous interactions with:

  • CNS-active medications: Antidepressants (SSRIs, SNRIs, tricyclics), antipsychotics, and stimulants may interact unpredictably with strychnine's convulsant activity, potentially lowering the seizure threshold.
  • Anti-epileptic drugs: Strychnine's pro-convulsant action could counteract the effects of seizure medications.
  • Muscle relaxants: Strychnine increases motor neuron excitability, potentially opposing the action of muscle relaxants.
  • Hepatically-metabolized drugs: Strychnine toxicity is worsened in liver impairment, and competition for hepatic metabolism pathways could alter clearance of other medications.

Gan Cao (Licorice): Although used externally in this formula, if any systemic absorption occurs, glycyrrhizin in licorice can theoretically interact with corticosteroids, antihypertensives, and potassium-depleting diuretics. This risk is minimal with external application.

Usage Guidance

Practical advice for getting the most out of San Yu He Shang Tang

Best time to take

Applied externally as a hot fumigation and wash multiple times throughout the day (classically described as ten or more times daily). Reheat the decoction to boiling each time before use.

Typical duration

Acute use for traumatic injuries: applied multiple times daily for 3-7 days, or until swelling and pain subside. May be extended for chronic post-injury stiffness.

Dietary advice

Since this is an external wash formula and not taken internally, strict dietary restrictions are less critical than for oral formulas. However, during recovery from traumatic injury with Blood stasis, it is generally advisable to avoid cold and raw foods, icy drinks, and greasy or heavy meals, as these can impair Qi and Blood circulation and slow healing. Mildly warming, blood-nourishing foods such as bone broth, dark leafy greens, and moderate amounts of ginger or turmeric in cooking may support recovery. Alcohol should be limited, as it can increase bruising and interfere with the body's healing processes.

San Yu He Shang Tang originates from Yi Zong Jin Jian (医宗金鉴), Volume 88 Qīng dynasty, 1742 CE

Classical Texts

Key passages from the classical Chinese medical texts that first described San Yu He Shang Tang and its clinical use

From the Yi Zong Jin Jian (《医宗金鉴》), Volume 88:

「散瘀和伤汤治一切碰撞损伤,瘀血积聚。番木鳖油炸去毛,红花,生半夏各五钱,骨碎补,甘草各三钱,葱须一两。水五碗煎滚,入醋二两,再煎十数滚,熏洗患处,一日十数次。」

Translation: "San Yu He Shang Tang treats all kinds of impact and collision injuries with accumulated Blood stasis. [Composed of] Nux Vomica (fried in oil, hair removed), Safflower, raw Pinellia — each five qian; Drynaria, Licorice — each three qian; Scallion root — one liang. Boil in five bowls of water, add two liang of vinegar, boil again ten or more times, then fumigate and wash the affected area, ten or more times daily."


From the Su Wen, Chapter 5 (Yin Yang Ying Xiang Da Lun, 阴阳应象大论), as cited in the formula's classical rationale:

「形伤肿,气伤痛」

Translation: "When the physical form is injured, there is swelling; when Qi is injured, there is pain."

Historical Context

How San Yu He Shang Tang evolved over the centuries — its origins, lineage, and place in the broader tradition of Chinese medicine

San Yu He Shang Tang originates from the Yi Zong Jin Jian (《医宗金鉴》, "Golden Mirror of the Medical Tradition"), one of the most authoritative comprehensive medical texts in Chinese history. This monumental work was compiled under imperial order during the Qing Dynasty, completed in 1742 under the editorship of Wu Qian (吴谦) and a team of court physicians during the reign of Emperor Qianlong. The formula appears in Volume 88, which falls within the orthopedic and traumatology section (正骨心法要旨), reflecting the sophisticated approach to musculoskeletal injuries in Qing-era medicine.

The formula is notable for its use as a topical fumigation-and-wash preparation (熏洗剂) rather than an internal decoction. This external application method has a long tradition in Chinese traumatology (伤科), where herbal washes and soaks were a primary therapeutic modality for injuries. The inclusion of vinegar (醋) as a co-decoction agent reflects the classical understanding that vinegar enhances the penetration of blood-moving herbs and assists in dispersing stagnation. The formula's classical verse (方歌) — "散瘀和伤水醋煎,红花木鳖共生甘,葱须碎补生半夏,熏洗诸伤数次痊" — served as a mnemonic for practitioners to remember its composition and method of use.