Tai Yi Gao

Supreme Unity Plaster · 太乙膏

Also known as: Jiā Wèi Tài Yī Gāo (加味太一膏, Augmented Supreme Unity Plaster)

A classical external plaster used in traditional Chinese surgery to treat skin abscesses, boils, carbuncles, traumatic injuries, and non-healing wounds. It works by promoting local blood circulation, drawing out toxins, reducing swelling, and encouraging the growth of new healthy tissue.

Origin Wài Kē Zhèng Zōng (外科正宗, Orthodox Manual of External Medicine) by Chén Shígōng, 1617 CE — Míng dynasty, 1617 CE
Composition 17 herbs
Dang Gui
King
Dang Gui
Shu Di huang
Deputy
Shu Di huang
Chi Shao
Deputy
Chi Shao
Da Huang
Deputy
Da Huang
Xuan Shen
Assistant
Xuan Shen
Bai Zhi
Assistant
Bai Zhi
Rou Gui
Assistant
Rou Gui
Ru Xiang
Assistant
Ru Xiang
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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. Tai Yi Gao is designed to correct these specific patterns.

Why Tai Yi Gao addresses this pattern

When Heat-Toxin accumulates in the flesh and skin, it causes local redness, swelling, heat, and pain characteristic of abscesses and carbuncles. The toxin congeals Blood and damages tissue, leading to pus formation and potentially deep tissue destruction. Tai Yi Gao addresses this pattern through its strong contingent of Heat-clearing and toxin-resolving herbs (Da Huang, Sheng Di Huang, Xuan Shen) that directly neutralize local Heat-Toxin. Simultaneously, Blood-moving herbs (Dang Gui, Chi Shao, Ru Xiang, Mo Yao) resolve the concurrent stasis, while pus-expelling ingredients (Bai Zhi, Tu Mu Bie, Qing Fen) draw toxins outward. The external application delivers these ingredients directly to the site of pathology.

A practitioner would look for one or more of these signs

Periappendiceal Abscess

Skin abscess with redness, swelling, heat, and pain

Boils

Carbuncles and boils at various stages

Skin Infection

Infected wounds with pus formation

Ulcer

Non-healing ulcers and sores

Commonly Prescribed For

These conditions can arise from the patterns above. A practitioner would consider Tai Yi Gao when these conditions are specifically caused by those patterns — not for all cases of these conditions.

Arises from: Heat-Toxin Accumulation

TCM Interpretation

In TCM, skin abscesses arise when Heat-Toxin accumulates in the local area, often due to external invasion of pathogenic factors or internal Heat generated by emotional stress, dietary excess, or organ dysfunction. The Heat-Toxin congeals the Blood and obstructs the channels, causing local swelling, redness, pain, and eventually pus formation. Chen Shigong, the author of this formula, emphasized that external diseases always have internal roots, and that the key pathomechanism involves disrupted Qi and Blood flow combined with toxic Heat accumulation in the flesh.

Why Tai Yi Gao Helps

Tai Yi Gao delivers its medicinal ingredients directly to the abscess site through external application. Da Huang and Xuan Shen clear the Heat-Toxin driving the infection. Dang Gui, Chi Shao, Ru Xiang, and Mo Yao invigorate Blood circulation to resolve local stasis, reduce swelling, and relieve pain. Bai Zhi and Tu Mu Bie draw pus and toxins outward. For abscesses that have not yet ruptured, the plaster helps bring the infection to a head; for those already ulcerated, it promotes drainage, clears residual infection, and supports the generation of new tissue through the flesh-generating actions of Qing Fen, Xue Yu, and the Dong Dan base.

Also commonly used for

Skin Infection

Infected surgical or traumatic wounds

Lumps

Mumps (epidemic parotitis, as external adjunct)

Breast Lumps

Breast lumps including fibrocystic changes

Chronic Wound

Chronic non-healing wounds and ulcers

Bruxism

Traumatic injuries with bruising and swelling

What This Formula Does

Every TCM formula has a specific set of actions — here's what Tai Yi Gao does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Tai Yi Gao is primarily used to support these areas of health:

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Tai Yi Gao 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 Tai Yi Gao works at the root level.

In TCM surgical theory, skin and soft tissue lesions such as abscesses (痈疽), carbuncles, and chronic non-healing sores arise when Heat-toxin accumulates locally and obstructs the flow of Qi and Blood. When Qi and Blood stagnate, the flesh cannot be properly nourished, leading to swelling, redness, pain, and eventually tissue breakdown with pus formation. If the toxin is not fully expelled and Blood circulation remains impaired, the sore may either fail to come to a head (in its early stage) or refuse to close and heal (in its later stage). Traumatic injuries similarly cause local Blood stasis and tissue damage that can trap toxins.

The key pathological factors at play are Heat-toxin (热毒), Blood stasis (瘀血), and impaired tissue regeneration. Heat-toxin causes the acute inflammatory signs of redness, heat, and pain. Blood stasis prevents fresh, nourishing Blood from reaching the damaged tissue. Together, these create a vicious cycle where the toxin cannot be expelled because circulation is blocked, and circulation remains blocked because the toxin generates ongoing inflammation. Tai Yi Gao, applied externally as a plaster, works directly at the site of pathology to break this cycle: it clears Heat-toxin from the local area, invigorates Blood to resolve stasis, and draws out pus and necrotic material while simultaneously encouraging the growth of new, healthy tissue.

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

Slightly Warm

Taste Profile

Predominantly acrid and bitter with underlying sweet notes. Acrid to disperse stagnation and move Blood, bitter to clear Heat-toxin and dry Dampness, sweet to support tissue regeneration.

Target Organs

Channels Entered

Ingredients

17 herbs

The herbs that make up Tai Yi Gao, 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
Dang Gui

Dang Gui

Dong quai

Dosage 60g
Temperature Warm
Taste Pungent, Sweet
Organ Affinity Heart, Liver, Spleen

Role in Tai Yi Gao

Nourishes and activates Blood to promote local circulation, relieve pain, and support the generation of new tissue at the wound site. As the primary Blood-moving herb in this formula, it addresses the root of stagnation that underlies abscess formation.
Deputies — Assists and enhances the King
Shu Di huang

Shu Di huang

Prepared rehmannia

Dosage 60g
Temperature Warm
Taste Sweet
Organ Affinity Kidneys, Liver

Role in Tai Yi Gao

Cools the Blood and clears Heat, counterbalancing the warm herbs in the formula. Nourishes Yin to support tissue regeneration and prevent excessive dryness from the Heat-clearing and Blood-moving ingredients.
Chi Shao

Chi Shao

Red peony roots

Dosage 60g
Temperature Cool
Taste Bitter
Organ Affinity Liver

Role in Tai Yi Gao

Clears Heat, cools the Blood, and invigorates Blood circulation to dispel stasis. Works synergistically with Dang Gui to relieve pain and reduce swelling at the site of infection.
Da Huang

Da Huang

Rhubarb

Dosage 60g
Temperature Cold
Taste Bitter
Organ Affinity Spleen, Stomach, Large Intestine, Liver, Pericardium

Role in Tai Yi Gao

Clears Heat and resolves toxins, breaks up Blood stasis and reduces swelling. Applied externally, it has strong anti-inflammatory and toxin-draining actions on abscesses and carbuncles.
Assistants — Supports or moderates other herbs
Xuan Shen

Xuan Shen

Ningpo figwort roots

Dosage 60g
Temperature Cold
Taste Bitter
Organ Affinity Large Intestine, Liver, Stomach

Role in Tai Yi Gao

Clears Heat, cools the Blood, nourishes Yin, and softens hardness. Helps dissolve nodules and deep-seated toxic swelling, supporting the detoxifying action of the formula.
Bai Zhi

Bai Zhi

Angelica roots

Dosage 60g
Temperature Warm
Taste Pungent
Organ Affinity Spleen, Stomach, Lungs

Role in Tai Yi Gao

Expels Wind, reduces swelling, expels pus, and alleviates pain. Helps draw out toxins and promote the discharge of pus from infected wounds.
Rou Gui

Rou Gui

Cinnamon bark

Dosage 60g
Temperature Hot
Taste Pungent, Sweet
Organ Affinity Heart, Kidneys, Liver, Spleen

Role in Tai Yi Gao

Warms the channels, promotes Blood circulation, and alleviates pain. Its warming nature helps the medicinal properties penetrate deeply into the tissues and prevents the formula from being overly cold, which could impede local circulation.
Ru Xiang

Ru Xiang

Frankincense

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

Role in Tai Yi Gao

Invigorates Blood, promotes the movement of Qi, relaxes the sinews, and relieves pain. Especially effective at reducing swelling and promoting the healing of damaged tissue.
Mo Yao

Mo Yao

Myrrh

Dosage 15g
Temperature Neutral
Taste Bitter
Organ Affinity Spleen, Heart, Liver

Role in Tai Yi Gao

Invigorates Blood, dispels stasis, reduces swelling, and generates new tissue. Works as a classic pair with Ru Xiang to enhance pain relief and wound healing.
Tu

Tu Mu Bie (土木鳖, Momordica Seed)

Dosage 60g

Role in Tai Yi Gao

Disperses swelling, resolves nodules, and draws out toxins. Particularly effective for hard, stubborn masses and deep-seated abscesses.
A

A Wei (阿魏, Asafoetida)

Dosage 9g

Role in Tai Yi Gao

Breaks up accumulations, disperses masses, and resolves toxins. Its strong dispersing action helps soften and dissolve deep, hardened swellings.
Qi

Qing Fen (轻粉, Calomel)

Dosage 12g

Role in Tai Yi Gao

Draws out toxins, kills parasites, and promotes the generation of new flesh. Applied externally, it helps resolve persistent, non-healing sores and ulcers.
Xu

Xue Yu (血余, Carbonized Human Hair)

Dosage 30g

Role in Tai Yi Gao

Stops bleeding, resolves stasis, and promotes tissue regeneration. Helps control local bleeding and supports the generation of new flesh at the wound site.
Envoys — Directs the formula to its target
Hu

Huai Zhi (槐枝, Sophora Twigs)

Dosage 100 segments

Role in Tai Yi Gao

Clears Heat and cools the Blood. Along with Liu Zhi, these plant twigs help guide the formula's therapeutic action to the skin surface and local tissues.
Li

Liu Zhi (柳枝, Willow Twigs)

Dosage 100 segments

Role in Tai Yi Gao

Dispels Wind and clears Heat from the skin. Together with Huai Zhi, directs the formula's action to the body's exterior, where the sores and wounds are located.
Do

Dong Dan (东丹/黄丹, Red Lead/Minium)

Dosage 1200g
Preparation Added after straining the medicated oil; stirred thoroughly to form the plaster.

Role in Tai Yi Gao

Serves as the plaster base, giving the formula its characteristic consistency. Also resolves toxins, generates flesh, and stops bleeding when applied externally.
Ma

Ma You (麻油, Sesame Oil)

Dosage 2500g
Preparation Used as the frying medium for all other herbs.

Role in Tai Yi Gao

Acts as the vehicle and solvent for the formula, extracting the medicinal properties of all herbs during prolonged frying. Also moistens the skin, soothes inflammation, and facilitates the penetration of other ingredients.

Why This Combination Works

How the herbs in Tai Yi Gao complement each other

Overall strategy

Tai Yi Gao addresses the fundamental pathomechanism of abscesses and sores: Heat-Toxin accumulating locally with concurrent Blood stasis, leading to swelling, pain, tissue destruction, and impaired healing. The formula simultaneously clears Heat-Toxin, invigorates Blood, draws out pus, and generates new tissue, making it applicable to all stages of wound evolution, from initial swelling through to post-ulceration healing.

King herbs

Dang Gui (Chinese Angelica) serves as King, nourishing and activating Blood at the largest dosage alongside other major herbs. Blood stagnation is considered the root mechanism in sore formation, and Dang Gui's dual ability to both nourish and move Blood makes it indispensable for relieving pain and providing the material basis for tissue repair.

Deputy herbs

Sheng Di Huang (raw Rehmannia) cools the Blood and clears Heat, addressing the toxic Heat component. Chi Shao (Red Peony) reinforces Blood-cooling and stasis-dispelling actions. Da Huang (Rhubarb) strongly purges Heat-Toxin and breaks up Blood stasis, providing powerful anti-inflammatory support. Together, these Deputies ensure that both Heat and stasis are addressed simultaneously.

Assistant herbs

Several groups of Assistants work from different angles. Bai Zhi and Tu Mu Bie serve as reinforcing Assistants that expel pus and disperse nodules. Xuan Shen clears Heat, softens hardness, and dissolves stubborn masses. Ru Xiang and Mo Yao form a classic pair for invigorating Blood, relieving pain, and promoting tissue regeneration. A Wei and Qing Fen are additional toxin-resolving agents that break down deep accumulations. Rou Gui acts as a restraining Assistant: its warmth prevents the many cold, Blood-cooling herbs from congealing Blood flow, ensures the medicinal properties penetrate deeply, and maintains healthy local circulation. Xue Yu (carbonized hair) stops bleeding and generates new flesh.

Envoy herbs

Huai Zhi (Sophora twigs) and Liu Zhi (Willow twigs) direct the formula's action to the body's surface, the skin and local tissues. Dong Dan (red lead/Minium) serves as both the plaster base and an envoy with its own toxin-resolving and flesh-generating properties. Ma You (sesame oil) is the vehicle that extracts and delivers the combined medicinal properties.

Notable synergies

The Ru Xiang and Mo Yao pairing is one of the most celebrated in external medicine, their combined effect on Blood invigoration and tissue regeneration far exceeding either alone. The balance between cooling herbs (Sheng Di Huang, Chi Shao, Da Huang, Xuan Shen) and warming Rou Gui prevents the formula from becoming excessively cold, which would impede local circulation and delay healing. The combination of pus-expelling herbs (Bai Zhi, Tu Mu Bie) with toxin-resolving agents (A Wei, Qing Fen) addresses both the surface manifestation and the deep root of the infection.

How to Prepare

Traditional preparation instructions for Tai Yi Gao

Aside from Dong Dan (red lead, Minium), place all remaining herbs into the sesame oil (Ma You, 2500g). Fry over a slow fire until the herbs are thoroughly blackened and exhausted, then strain and discard the residue. Return the medicated oil to the heat and add Dong Dan (1200g), stirring continuously until the mixture forms a smooth, even paste.

To use: gently warm the plaster over indirect heat until it softens, then spread it onto paper or cloth. Cut to match the size of the wound or sore, and apply directly to the affected area. Change as needed based on clinical condition.

Common Modifications

How practitioners adapt Tai Yi Gao for specific situations

Added
Huang Lian

6g, to strongly clear Heat and resolve Toxin

Huang Qi

9g, to clear Heat and dry Dampness at the wound site

When the Heat-Toxin component is especially severe, adding Huang Lian and Huang Bai reinforces the formula's Heat-clearing and detoxifying capacity to match the intensity of the pathogenic Heat.

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

Contraindications

Situations where Tai Yi Gao should not be used or requires extra caution

Avoid

Pregnancy: This formula contains Qing Fen (calomel, mercurous chloride) and Dong Dan (lead oxide), both of which are toxic heavy metals. Lead and mercury can cross the placental barrier and cause severe developmental harm. Absolutely contraindicated in pregnancy.

Avoid

Internal use: Tai Yi Gao is strictly an external plaster. Ingestion of any amount is dangerous due to the lead (Dong Dan) and mercury (Qing Fen) content, which can cause acute poisoning affecting the nervous system, kidneys, and liver.

Avoid

Open wounds with direct vascular exposure: Avoid application over wounds where there is direct access to the bloodstream (e.g. deep lacerations exposing blood vessels), as this increases systemic absorption of lead and mercury.

Caution

Application to large body surface areas or prolonged continuous use: Even as an external plaster, lead and mercury can be absorbed through the skin. Extended use over large areas increases the risk of chronic heavy metal accumulation.

Caution

Yin-deficiency sores: Classical TCM surgery distinguishes between Yang-pattern and Yin-pattern sores. For sores caused by pure Yin deficiency and Cold with no Heat-toxin component, this predominantly Heat-clearing and toxin-drawing formula may not be appropriate as a primary treatment.

Caution

Known allergy or sensitivity to any component: Ru Xiang (frankincense) and Mo Yao (myrrh) are known to cause contact dermatitis in some individuals. Discontinue if skin irritation, rash, or allergic reaction develops at the application site.

Caution

Use in children, especially infants: Due to heavy metal content, extra caution is required. Children absorb lead more readily than adults, and their developing nervous systems are particularly vulnerable.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Absolutely contraindicated during pregnancy. Tai Yi Gao contains Dong Dan (铅丹, lead oxide / Pb3O4) and Qing Fen (轻粉, calomel / Hg2Cl2), both of which are toxic heavy metals. Lead readily crosses the placenta and can cause fetal neurodevelopmental damage, low birth weight, and miscarriage. Mercury compounds also cross the placental barrier and are teratogenic. Even external application carries a risk of transdermal absorption. Additionally, several herbs in the formula (Da Huang, Chi Shao, Dang Gui, Mo Yao, Ru Xiang) have Blood-moving properties that are traditionally cautioned against during pregnancy. No circumstances justify using this plaster during pregnancy.

Breastfeeding

Use with extreme caution during breastfeeding, and ideally avoid. Although Tai Yi Gao is an external plaster, it contains lead oxide (Dong Dan) and mercurous chloride (Qing Fen). Lead absorbed through the skin can enter breast milk and be transmitted to the nursing infant. Infants are especially vulnerable to lead neurotoxicity, which can impair cognitive development irreversibly. Mercury compounds similarly pose risks of transfer through breast milk. If use is unavoidable for a serious condition, apply only to small areas, for the shortest possible duration, and under close practitioner supervision. Monitor the infant for any signs of irritability, feeding difficulties, or developmental concerns.

Children

Tai Yi Gao should be used with great caution in children and is generally not recommended for infants. The formula contains lead oxide (Dong Dan / Pb3O4) and calomel (Qing Fen / Hg2Cl2). Children absorb lead far more efficiently through the skin and gastrointestinal tract than adults, and their developing nervous systems are highly vulnerable to heavy metal toxicity. Lead exposure in children can cause irreversible neurodevelopmental harm, including reduced IQ and behavioral problems. If a practitioner judges that use is necessary in an older child, it should be applied to the smallest possible area, for the shortest duration, and never near the mouth or hands where the child might inadvertently ingest residue. Safer modern alternatives should be strongly considered.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Tai Yi Gao

As an external plaster, Tai Yi Gao has limited systemic drug interactions compared to oral formulas. However, significant concerns exist related to its heavy metal content:

  • Dong Dan (铅丹, lead oxide): Chronic transdermal lead absorption can interfere with medications metabolized through hepatic or renal pathways. Lead toxicity can mimic or worsen side effects of drugs affecting the nervous system. Patients on chelation therapy or being monitored for lead levels should not use this plaster, as it would counteract treatment.
  • Qing Fen (轻粉, calomel / mercurous chloride): Mercury compounds absorbed through the skin can interact with drugs containing iodides or bromides, potentially forming highly toxic mercuric iodide or bromide in the body. Patients taking potassium iodide, iodine-based contrast agents, or bromide-containing medications should avoid this formula.
  • Anticoagulants and antiplatelet drugs: The formula contains multiple Blood-invigorating herbs (Dang Gui, Chi Shao, Ru Xiang, Mo Yao, Da Huang) that, even when applied externally, may have mild local effects on coagulation at the wound site. While systemic interaction is unlikely from topical use alone, caution is warranted in patients on warfarin, heparin, or similar medications, particularly when applied over open wounds.

Usage Guidance

Practical advice for getting the most out of Tai Yi Gao

Best time to take

Applied externally at any time. Warm the plaster gently before application so it becomes soft and pliable, then spread on paper or cloth and apply directly over the affected area, sized to cover the lesion.

Typical duration

Applied externally as needed. Changed once or twice daily for acute abscesses. For chronic non-healing sores, may be used for 1 to 2 weeks with reassessment. Avoid prolonged continuous use due to heavy metal content.

Dietary advice

While using Tai Yi Gao externally for sores and abscesses, Chen Shigong's general surgical dietary advice applies: avoid cold, raw foods and greasy, rich foods that burden the Spleen and impede tissue healing. Avoid alcohol and strongly spiced foods, which can aggravate Heat-toxin. Favor easily digestible, nourishing foods such as congee, soups, and lightly cooked vegetables that support Qi and Blood production to aid tissue recovery from within.

Tai Yi Gao originates from Wài Kē Zhèng Zōng (外科正宗, Orthodox Manual of External Medicine) by Chén Shígōng, 1617 CE Míng dynasty, 1617 CE

Classical Texts

Key passages from the classical Chinese medical texts that first described Tai Yi Gao and its clinical use

Formula verse (方歌) from the Wai Ke Zheng Zong (外科正宗):

「太乙膏中乳没归,丹桂地芍芷阿魏,木鳖将军轻粉玄,血余槐柳枝相随。」

Translation: "Tai Yi Gao contains frankincense, myrrh, and Dang Gui; lead oxide, cinnamon bark, Rehmannia, peony, Bai Zhi, and asafoetida; Momordica seed, rhubarb, calomel, and Xuan Shen; with human hair char, locust twigs, and willow twigs following along."

This verse is a mnemonic for the formula's full composition, listing each ingredient in a rhythmic four-line format typical of Chen Shigong's text.

Historical Context

How Tai Yi Gao evolved over the centuries — its origins, lineage, and place in the broader tradition of Chinese medicine

Tai Yi Gao first appeared in the Wai Ke Zheng Zong (外科正宗, "Orthodox Manual of External Medicine"), published in 1617 by Chen Shigong (陈实功, c. 1555–1636), the leading figure of the "Orthodox School" (正宗派) of TCM surgery during the Ming Dynasty. Chen practiced in Chongchuan (present-day Nantong, Jiangsu) and accumulated over forty years of clinical surgical experience. His book was praised by the great Qing-dynasty physician Xu Dachun (徐大椿) as the best entry point for studying TCM external medicine.

The formula's original name in the text is "Jia Wei Tai Yi Gao" (加味太一膏, "Augmented Tai Yi Plaster"), indicating that it was Chen Shigong's expanded modification of an older, simpler plaster formula that had circulated under the name "Tai Yi Gao" in earlier texts such as the Zheng Zhi Zhun Sheng (证治准绳). Chen's version added several Blood-invigorating and toxin-clearing herbs to create a more broadly applicable surgical plaster. In Chen's clinical system, Tai Yi Gao served as a foundational external treatment used across many conditions described in the book, from brain abscesses (脑疽) and carbuncles of the back (发背) to gangrene of the extremities (脱疽). It became one of the most widely used surgical plasters in the Chinese medical tradition, and the famous Shanghai TCM surgeon Gu Xiaolan (顾筱岩) of the 20th century continued to use it as a core external preparation.