Ingredient Animal — part (动物部分 dòng wù bù fèn)

Shui Niu Jiao

Water buffalo horn · 水牛角

Bubalus bubalis Linnaeus · Cornu Bubali

Also known as: Shā Niú Jiǎo (沙牛角), Niú Jiǎo Jiān (牛角尖), Buffalo horn,

Shui Niu Jiao (Water buffalo horn) plant

Images shown are for educational purposes only

Water buffalo horn is a cooling medicinal substance used in Chinese medicine to clear dangerous levels of internal Heat, particularly when Heat has penetrated deep into the blood. It is the modern replacement for the now-prohibited rhinoceros horn and is primarily used for high fevers with delirium, bleeding caused by overheated blood, skin rashes from toxic Heat, and convulsions in children.

Category Heat-clearing herbs Herbs that clear Heat and cool the Blood (清热凉血药)
Therapeutic focus Fever Management Bleeding Disorders Skin Health Neurological Health

TCM Properties

Temperature

Cold

Taste

Bitter (苦 kǔ), Salty (咸 xián)

Channels entered

Heart, Liver, Stomach

Parts used

Animal — part (动物部分 dòng wù bù fèn)

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What This Ingredient Does

Every ingredient has a specific set of actions — here's what Shui Niu Jiao does in the body, explained in both everyday and TCM terms

Therapeutic focus

In practical terms, Shui Niu Jiao is primarily used to support these areas of health:

Fever Management Bleeding Disorders Skin Health Neurological Health

TCM Actions

In TCM terminology, these are the specific therapeutic actions that Shui Niu Jiao performs to restore balance in the body:

Clears Heat and Cools the Blood Resolves Toxicity Calms the spirit and arrests tremors Cools the Blood and Stops Bleeding

How these actions work

'Clears Heat and cools the Blood' is Shuǐ Niú Jiǎo's primary action. In warm-febrile diseases (wēn bìng), pathogenic Heat can penetrate from the superficial layers deep into the nutritive (yíng) and Blood (xuè) levels, causing high fever, restlessness, delirium, and a deep crimson tongue. Shuǐ Niú Jiǎo is bitter and salty in taste and Cold in nature, allowing it to enter the Blood level directly through the Heart and Liver channels, clearing the intense Heat that has lodged there. It is considered the modern substitute for the now-banned rhinoceros horn (Xī Jiǎo), used at roughly ten times the original dosage.

'Resolves toxins' means this substance can address the toxic quality of Heat that causes tissue damage, such as the purple-black skin rashes (macules) seen in severe febrile illness, as well as sore, swollen throat and mouth ulcers. The salty taste helps it penetrate deeply into the Blood to neutralize Heat toxins.

'Calms the spirit and arrests tremors' refers to its ability to settle the mind when extreme Heat disturbs the Heart, which houses consciousness (shén). When Heat invades the Pericardium, it can cause delirium, convulsions, and loss of consciousness. Shuǐ Niú Jiǎo clears Heart Fire to help restore mental clarity and stop heat-induced spasms, though this action is considered milder than its Blood-cooling effect.

'Cools Blood Heat and stops bleeding' describes how, by clearing Heat from the Blood, Shuǐ Niú Jiǎo addresses the root cause of bleeding that occurs when extreme Heat forces blood out of the vessels. This includes nosebleeds, vomiting blood, blood in the stool or urine, and subcutaneous bleeding (purpura).

Patterns Addressed

In TCM, symptoms cluster into recognizable patterns of disharmony. Shui Niu Jiao is used to help correct these specific patterns.

Why Shui Niu Jiao addresses this pattern

Shuǐ Niú Jiǎo directly addresses Blood Heat through its bitter, salty, and Cold nature. It enters the Heart and Liver channels, the two organs most closely associated with Blood. Its bitter taste descends and drains Heat, while its salty taste allows it to penetrate deeply into the Blood level. This combination makes it especially effective at clearing the intense Heat lodged in the Blood that causes reckless bleeding, crimson tongue, and agitation. Unlike many Cold substances, Shuǐ Niú Jiǎo does not congeal or stagnate Blood even as it cools it, making it particularly well-suited for this pattern.

A practitioner would look for one or more of these signs

Nosebleeds

Epistaxis from blood Heat forcing blood upward

Vomiting Blood

Hematemesis from Heat damaging blood vessels

Skin Rashes

Macules and papules, often dark purple or black

Dark Blood In Stool

Bleeding due to Heat damaging the lower vessels

Commonly Used For

These are conditions where Shui Niu Jiao is frequently used — but only when they arise from the specific patterns it addresses, not in all cases

Arises from: Heat Entering The Ying (Nutritive) Level Heat Entering The Blood Level

TCM Interpretation

In TCM, high fever in the context of warm-febrile disease (wēn bìng) is understood as pathogenic Heat progressing inward through four levels: protective (wèi), Qi, nutritive (yíng), and Blood (xuè). When Heat breaches the Qi level and enters the nutritive or Blood level, the fever becomes more severe and dangerous. At the nutritive level, Heat disturbs the Heart (which governs consciousness), causing nighttime fever, restlessness, and early delirium. At the Blood level, Heat scorches the vessels and the spirit, causing unrelenting fever, bleeding, coma, and dark rashes. The deeper the Heat penetrates, the more urgently it must be cleared from the Blood.

Why Shui Niu Jiao Helps

Shuǐ Niú Jiǎo is Cold, bitter, and salty, giving it the ability to enter directly into the Blood level through the Heart and Liver channels. It clears the deep-seated Heat that conventional Qi-level herbs cannot reach. Its bitter taste drains Fire downward, while its salty taste allows it to penetrate into the Blood. Importantly, despite being intensely Cold, it does not congeal or stagnate Blood, which makes it uniquely suited for Blood-level Heat where both cooling and maintaining blood flow are essential. Modern pharmacological research has confirmed its anti-pyretic, anti-inflammatory, and anti-endotoxin effects, supporting its traditional use in severe febrile conditions.

Also commonly used for

Nosebleeds

When caused by Blood Heat

Vomiting Blood

From Heat forcing blood out of vessels

Delirium

From Heat disturbing the Heart spirit

Convulsions

Childhood febrile convulsions

Sore Throat

Swollen, painful throat from Heat toxins

Dark Blood In Stool

When due to Blood Heat

Blood In Urine

Heat-induced hematuria

Mouth Ulcers

From Heart and Stomach Fire

Ingredient Properties

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

Temperature

Cold

Taste

Bitter (苦 kǔ), Salty (咸 xián)

Channels Entered

Heart Liver Stomach

Parts Used

Animal — part (动物部分 dòng wù bù fèn)

Dosage & Preparation

These are general dosage guidelines for Shui Niu Jiao — always follow your practitioner's recommendation, as dosages vary based on the formula and your individual condition

Standard dosage

15–30g (decoction, must be decocted first for 3+ hours); 1.5–3g (concentrated powder, taken orally)

Maximum dosage

Up to 60–120g in decoction for acute, severe Heat conditions (high fever, delirium, convulsions), always decocted first for at least 3 hours. Concentrated powder: up to 3g per dose, twice daily.

Dosage notes

Dosage varies significantly depending on the preparation form. In raw horn shavings for decoction, 15–30g is the standard range, with the critical requirement that the horn must be decocted first (先煎) for at least 3 hours before adding other herbs, due to the dense keratin structure requiring prolonged extraction. For severe, acute conditions such as high fever with delirium or convulsions, the dose can be increased to 60–120g. When using pre-made concentrated powder (水牛角浓缩粉), 1.5–3g per dose is sufficient, taken 1–2 times daily, dissolved in the strained decoction or warm water. If ground into raw powder (研末) for oral administration, 3–9g per dose is typical. Because Shui Niu Jiao is the substitute for the more potent rhinoceros horn, its effective dose is roughly 10 times that of the original Xi Jiao dose in classical formulas.

Preparation

Must be decocted first (先煎, xiān jiān) for at least 3 hours before adding other herbs to the pot. The dense keratin structure requires prolonged boiling to extract the active components. The horn is typically pre-processed into thin shavings (镑片) or small chips to improve extraction. Alternatively, the concentrated powder form (水牛角浓缩粉) can be dissolved directly into the strained decoction or taken with warm water, bypassing the need for extended decoction.

Processing Methods

In TCM, the same ingredient can be prepared in different ways to change its effects — here's how processing alters what Shui Niu Jiao does

Processing method

The horn is split open, soaked in hot water, then shaved into thin slices (镑片) and dried in the sun. This is the standard decoction form.

How it changes properties

The core properties (Cold, bitter, salty) remain unchanged. Slicing increases the surface area to allow better extraction during the required long decoction time (3+ hours of pre-boiling). The thermal nature and actions are the same as the raw horn.

When to use this form

The standard form for decoctions. Used when preparing herbal formulas at home or in clinic. Requires extended pre-boiling (at least 3 hours before adding other herbs) to extract the active compounds from the dense horn material. Typical dosage is 15-30g, up to 60-120g in severe cases.

Common Ingredient Pairs

These ingredients are traditionally combined with Shui Niu Jiao for enhanced therapeutic effect

Shu Di Huang
Shu Di Huang Shuǐ Niú Jiǎo 30g : Shēng Dì Huáng 24g

Shuǐ Niú Jiǎo clears Heart Heat and resolves Blood-level Heat toxins, while Shēng Dì Huáng cools the Blood, nourishes Yin, and stops bleeding. Together they powerfully clear Heat toxins from the Blood while simultaneously replenishing the Yin fluids that Heat has damaged, preventing the vicious cycle where Yin depletion further intensifies Heat.

When to use: Warm-febrile disease with Heat entering the nutritive or Blood level, manifesting as high fever, delirium, macules, or bleeding (nosebleed, vomiting blood). This is the core herb pair in both Xī Jiǎo Dì Huáng Tāng and Qīng Yíng Tāng.

Ling Yang Jiao
Ling Yang Jiao Shuǐ Niú Jiǎo 30–60g : Líng Yáng Jiǎo 1–3g

Shuǐ Niú Jiǎo cools Blood-level Heat and resolves toxins, while Líng Yáng Jiǎo (Antelope horn) excels at extinguishing Liver Wind and stopping convulsions. Together they address both the Blood Heat and the Wind that arises from extreme Heat, providing combined anti-convulsive and fever-reducing effects.

When to use: High fever with convulsions and tremors, particularly in childhood febrile seizures or encephalitis, where both Blood-level Heat and Liver Wind are present.

Mu Dan Pi
Mu Dan Pi Shuǐ Niú Jiǎo 30g : Mǔ Dān Pí 9–12g

Both herbs cool the Blood, but Shuǐ Niú Jiǎo focuses on clearing Heart Heat and resolving Heat toxins, while Mǔ Dān Pí activates Blood circulation and disperses stasis. Their combination cools the Blood while simultaneously preventing the Blood stagnation that often accompanies severe Blood Heat, embodying the classical principle of 'cooling Blood and dispersing Blood' (liáng xuè sàn xuè).

When to use: Blood Heat with both bleeding and Blood stasis, such as dark purpuric rashes, or fever with signs of both Heat and stagnation. This pair appears together in Xī Jiǎo Dì Huáng Tāng.

Shi Gao
Shi Gao Shuǐ Niú Jiǎo 30g : Shí Gāo 30–60g

Shuǐ Niú Jiǎo clears Heat from the Blood (yíng/xuè) level, while Shí Gāo (Gypsum) powerfully drains Heat from the Qi level. Paired together, they clear Heat from both the Qi and Blood levels simultaneously, addressing cases where pathogenic Heat is burning through multiple layers at once.

When to use: Warm-febrile disease with simultaneous Qi-level and Blood-level Heat (qì xuè liǎng fán), manifesting as extreme high fever, great thirst, delirium, and rashes. This combination appears in formulas like Zǐ Xuě Dān.

Key Formulas

These well-known formulas feature Shui Niu Jiao in a prominent role

Xi Jiao Di Huang Tang 犀角地黃湯 King

This is THE definitive formula for Shuǐ Niú Jiǎo's core action. Originally using rhinoceros horn, it now uses Shuǐ Niú Jiǎo at 30g as the King herb to clear Heat toxins from the Blood level, cool the Blood, and resolve reckless bleeding. The formula perfectly showcases Shuǐ Niú Jiǎo's ability to enter the Blood level via the Heart and Liver, clear intense Heat, and cool Blood without causing stasis.

Qing Ying Tang 清營湯 King

From the Wen Bing Tiao Bian (Systematic Differentiation of Warm Diseases), this formula uses Shuǐ Niú Jiǎo (replacing the original Xī Jiǎo) as the King herb to clear Heat from the nutritive (yíng) level. It demonstrates Shuǐ Niú Jiǎo's role in the earlier stage of Blood-level invasion, clearing nutritive Heat while the formula's other ingredients 'redirect Heat outward to the Qi level' (tòu rè zhuǎn qì).

An Gong Niu Huang Wan 安宮牛黃丸 King

One of the most famous emergency formulas in Chinese medicine (the 'Three Treasures of Warm Disease'). Shuǐ Niú Jiǎo (as water buffalo horn concentrated powder, replacing the original rhinoceros horn) serves as co-King alongside Niú Huáng, clearing Heat from the Pericardium and cooling the Blood to treat high fever with coma and delirium. This formula showcases Shuǐ Niú Jiǎo's spirit-calming and Heat-resolving actions in acute emergencies.

Zi Xue Dan 紫雪丹 Deputy

Another of the 'Three Treasures,' Zǐ Xuě Dān uses Shuǐ Niú Jiǎo alongside Shí Gāo and Líng Yáng Jiǎo to clear Heat from both the Qi and Blood levels while arresting convulsions. It highlights Shuǐ Niú Jiǎo's role in treating Heat-induced tremors and convulsions, complementing its Blood-cooling actions with the formula's overall anti-spasmodic strategy.

Comparable Ingredients

These ingredients have overlapping uses — here's how to tell them apart

Shu Di Huang
Shui Niu Jiao vs Shu Di Huang

Both cool the Blood and are frequently used together. However, Shuǐ Niú Jiǎo is stronger at clearing Heart Heat, resolving Heat toxins, and calming the spirit (addressing delirium and convulsions), while Shēng Dì Huáng is stronger at nourishing Yin, generating fluids, and stopping bleeding through its sweet, cooling nature. In severe Blood-level Heat, Shuǐ Niú Jiǎo targets the Heat while Shēng Dì Huáng replenishes the damaged Yin.

Mu Dan Pi
Shui Niu Jiao vs Mu Dan Pi

Both cool the Blood, but their mechanisms differ. Shuǐ Niú Jiǎo primarily clears Heat toxins from the Blood through the Heart channel and calms the spirit, making it the choice for delirium and severe febrile illness. Mǔ Dān Pí cools the Blood while also activating Blood circulation and dispersing stasis, making it better for conditions where Blood Heat has led to Blood stagnation, such as amenorrhea from Blood Heat or chronic low-grade fever from Yin Deficiency with Blood stasis.

Chi Shao
Shui Niu Jiao vs Chi Shao

Both enter the Blood level and clear Blood Heat. Shuǐ Niú Jiǎo is far stronger at clearing Heat toxins and calming the spirit, and is used in acute, life-threatening febrile emergencies. Chì Sháo is milder, excels at cooling the Blood while invigorating Blood circulation to disperse stasis, and is more commonly used in less critical Blood Heat conditions or where Blood stasis is a prominent feature.

Common Substitutes & Adulterants

Related species and common adulterations to be aware of when sourcing Shui Niu Jiao

Shui Niu Jiao itself is the modern substitute for the now-banned rhinoceros horn (犀角, Xi Jiao). The two share similar amino acid profiles and pharmacological properties, though rhinoceros horn was historically considered more potent. Water buffalo horn may sometimes be confused with or substituted by yellow cattle horn (黄牛角, Huang Niu Jiao), which has overlapping but not identical effects. Yellow cattle horn shavings tend to be lighter in colour and have a different cross-sectional pattern. Yak horn (牦牛角) has also been investigated as a potential substitute. Authenticity can be confirmed through microscopic examination of the horn structure, as different animal horns show distinct histological features in cross-section.

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

Toxicity Classification

Classical Chinese pharmacopoeia toxicity rating for Shui Niu Jiao

Non-toxic

Shui Niu Jiao is classified as non-toxic in both classical texts and the modern Chinese Pharmacopoeia. Animal toxicity studies have confirmed very low toxicity: when water buffalo horn concentrated liquid was administered to mice at 25 to 250 times the normal human dose, no acute toxicity or deaths were observed over 72 hours. Clinical use also confirms an absence of significant adverse effects. At high doses, some patients may experience mild gastrointestinal discomfort including upper abdominal fullness, nausea, bloating, and reduced appetite, but these are self-limiting and resolve when the dose is reduced.

Contraindications

Situations where Shui Niu Jiao should not be used or requires extra caution

Caution

Spleen and Stomach deficiency-cold (中虚胃寒): Shui Niu Jiao is bitter and very cold in nature. It will further damage the Spleen and Stomach Yang in people who already have cold-type digestive weakness, worsening symptoms like loose stools, poor appetite, and abdominal coldness.

Caution

Diarrhea due to Spleen/Stomach deficiency: The strongly cold nature of this herb can aggravate diarrhea in patients with deficiency-cold patterns of the digestive system.

Caution

Skin rashes in patients with Qi deficiency and without high fever: When rashes appear in a deficiency context rather than excess Heat, using this strongly cold herb can damage the body's righteous Qi without addressing the root cause.

Caution

Absence of excess Heat patterns: This herb should not be used in patients who do not present with genuine Heat signs. Using strong cold-natured medicinals in cold or deficiency conditions can cause harm.

Avoid

Known allergy to water buffalo horn or its components: Discontinue use if allergic reactions occur.

Caution

Large doses may cause upper abdominal discomfort, nausea, bloating, and loss of appetite. Dosage should be carefully managed and reduced if gastrointestinal symptoms appear.

Classical Incompatibilities

Traditional Chinese pharmacological incompatibilities — herbs or substances to avoid combining with Shui Niu Jiao

Shui Niu Jiao appears in the Nineteen Mutual Fears (十九畏) list as the replacement for rhinoceros horn (犀角): Chuan Wu (川乌) and Cao Wu (草乌) fear rhinoceros horn (犀角). Since Shui Niu Jiao is the standard modern substitute for Xi Jiao, caution is advised when combining it with Chuan Wu, Cao Wu, or Fu Zi (附子, a processed form of aconite), though the interaction with the substitute has been described as showing a 'mutually diminishing' (相恶) effect rather than a frank toxicity reaction.

Special Populations

Important considerations for pregnancy, breastfeeding, and pediatric use

Pregnancy

Use with caution during pregnancy. Shui Niu Jiao is strongly cold in nature and enters the Blood level, which means it could theoretically affect the uterine environment. While it is not classified as strictly contraindicated in pregnancy, its powerful Blood-cooling and Blood-moving properties warrant careful evaluation. It should only be used during pregnancy when there is clear evidence of high fever or Blood-Heat that poses a greater risk to the pregnancy than the herb itself, and only under practitioner supervision.

Breastfeeding

No specific contraindication for breastfeeding has been documented. However, given its strongly cold nature, extended use could theoretically affect the mother's digestive function and Qi, which may indirectly influence milk production. Short-term use at standard doses for acute Heat conditions is likely acceptable under practitioner guidance, but prolonged use during lactation should be avoided without clear clinical need.

Children

Shui Niu Jiao has a long history of use in children, particularly for high fever and convulsions. For children under 3 years old, a typical decoction dose is around 30g per day (of the raw horn shavings, decocted for at least 2–3 hours). For children over 3 years old, the dose may be increased to approximately 60g per day in decoction. The concentrated powder form is often more practical for children at proportionally reduced doses. As with all cold-natured medicinals in paediatric use, monitor for signs of digestive upset (loose stools, poor appetite) and discontinue promptly once the Heat condition resolves.

Drug Interactions

If you are taking pharmaceutical medications, be aware of these potential interactions with Shui Niu Jiao

There are no well-documented direct drug interactions for Shui Niu Jiao in the pharmacological literature. However, based on its known pharmacological properties, the following theoretical considerations apply:

  • Anticoagulant and antiplatelet medications: Some studies suggest Shui Niu Jiao may shorten bleeding time and increase platelet counts, while others show possible effects on coagulation. Patients taking warfarin, heparin, aspirin, or clopidogrel should use this herb with caution, as it may alter coagulation parameters in unpredictable ways.
  • Antihypertensive medications: Animal studies have shown that Shui Niu Jiao can lower blood pressure. Concurrent use with antihypertensive drugs may result in additive hypotensive effects.
  • Sedative medications: Shui Niu Jiao has demonstrated sedative and anticonvulsant effects in animal models. Caution is warranted with concurrent use of benzodiazepines, barbiturates, or other CNS depressants.
  • Cardiac glycosides (digoxin): The herb has shown cardiotonic effects (strengthening heart contractions) in isolated heart studies, which could theoretically interact with cardiac glycoside therapy.

Dietary Advice

Foods and dietary considerations when taking Shui Niu Jiao

While taking Shui Niu Jiao, avoid excessively spicy, greasy, or warming foods (such as lamb, chilli peppers, fried foods, and alcohol) which can counteract its Heat-clearing effects. Since this herb is very cold in nature, patients with weak digestion should eat easily digestible, warm (in temperature) foods such as congee and cooked vegetables to protect the Stomach and Spleen from excessive cold. Avoid raw and cold foods if digestive symptoms like bloating or loose stools develop during treatment.

Botanical Description

Physical characteristics and morphology of the Shui Niu Jiao source animal

Shui Niu Jiao is not a plant-derived herb but an animal product. It is the horn of the domestic water buffalo (Bubalus bubalis Linnaeus), a large bovid belonging to the family Bovidae. The water buffalo is a massive animal that can exceed 2.5 metres in body length. Its horns are characteristically long, flattened, and curved, with prominent transverse ridges (growth rings) on the surface. The skin is thick and lacks sweat glands; the coat is coarse, short, and typically grey-black in colour, though some animals are yellowish-brown or white.

Water buffalo originated in the Indian subcontinent, Southeast Asia, and China, and were domesticated around 3000 BCE. They are widely raised in southern China, particularly in rice-growing regions where they serve as working animals. The horns are harvested from slaughtered animals and processed for medicinal use by splitting, soaking in hot water, planing into thin shavings or chips, and drying.

Sourcing & Harvesting

Where Shui Niu Jiao is sourced, when it's harvested or collected, and how to assess quality

Harvesting season

Year-round. The horns are collected from slaughtered water buffalo at any time of year, as this is an animal by-product of the meat industry rather than a seasonally harvested substance.

Primary growing regions

Water buffalo are raised throughout China but are most concentrated in the southern and eastern provinces (华南 Huánán and 华东 Huádōng regions). Major production areas include Guangdong, Guangxi, Yunnan, Guizhou, Sichuan, Hunan, Hubei, Jiangxi, Anhui, Zhejiang, and Fujian. Since water buffalo are domesticated animals, there is no specific 道地 (dào dì) terroir concept as with plant medicines. However, horns from healthy, mature animals raised in southern China are traditionally considered the best quality source material.

Quality indicators

The raw horn is a slightly flattened, curved cone of variable length. The surface should be brownish-black to greyish-black in colour. One side shows transverse groove-like ridges, while the other has dense horizontal indentations. The upper portion tapers to a point with longitudinal striations. The base is roughly triangular and hollow. The material should be hard and horn-like in texture, with a faint fishy smell and a bland to slightly salty taste. Good quality horn shavings (镑片) are thin, uniform, and translucent. The concentrated powder should be fine, even, and free of off-odours. Avoid horns that are cracked, mouldy, or from very young animals.

Classical Texts

Key passages from the classical Chinese medical texts that describe Shui Niu Jiao and its therapeutic uses

Classical Quotes on Shui Niu Jiao

  • 《名医别录》(Míng Yī Bié Lù, Miscellaneous Records of Famous Physicians, ~220–420 AD):
    Original: 「疗时气寒热头痛。」
    Translation: "Treats seasonal Qi disorders with alternating chills and fever, and headache."
  • 《日华子本草》(Rì Huá Zǐ Běn Cǎo, ~10th century):
    Original: 「煎汁，治热毒风及壮热。」
    Translation: "Decocted as a liquid, it treats Wind due to Heat-toxin and high fever."
  • 《本草纲目》(Běn Cǎo Gāng Mù, Li Shizhen, 1578):
    Original: 「苦，寒，无毒。治淋破血。」
    Translation: "Bitter, cold, non-toxic. Treats painful urination and breaks up static Blood."
  • 《陆川本草》(Lù Chuān Běn Cǎo):
    Original: 「凉血解毒，止衄。治热病昏迷，麻痘斑疹，吐血衄血，血热溺赤。」
    Translation: "Cools the Blood and resolves toxins, stops nosebleeds. Treats delirium from febrile illness, measles and pox rashes, vomiting blood and nosebleeds, bloody and dark-coloured urine from Blood Heat."
  • 《四川中药志》(Sì Chuān Zhōng Yào Zhì):
    Original: 「治风热头痛，喉头红肿，小儿惊风及吐血。」
    Translation: "Treats Wind-Heat headache, redness and swelling of the throat, childhood convulsions, and vomiting of blood."

Historical Context

The history and evolution of Shui Niu Jiao's use in Chinese medicine over the centuries

Shui Niu Jiao was first recorded as a medicinal substance in the Ming Yi Bie Lu (名医别录, Miscellaneous Records of Famous Physicians), compiled during the Southern and Northern Dynasties period (roughly 420–589 AD). In its earliest recorded use, the horn was employed simply for treating seasonal febrile illness with headache. For most of Chinese medical history, it was considered a minor remedy because rhinoceros horn (犀角, Xī Jiǎo) was the preferred Blood-cooling agent and was readily available through trade.

The modern importance of Shui Niu Jiao arose directly from wildlife conservation. As rhinoceros populations plummeted globally, China banned the use of rhinoceros horn in 1993. Research conducted from the 1970s onward demonstrated that water buffalo horn shares a very similar chemical composition with rhinoceros horn, including comparable amino acid profiles, peptides, cholesterol, and guanidine derivatives. The Chinese Pharmacopoeia formally listed water buffalo horn as a substitute starting with the 1977 edition. Today, classical formulas that originally contained rhinoceros horn, such as Xi Jiao Di Huang Tang (犀角地黄汤), An Gong Niu Huang Wan (安宫牛黄丸), and Zi Xue Dan (紫雪丹), all use Shui Niu Jiao or its concentrated powder as a replacement. The standard substitution ratio is roughly 10:1 (water buffalo horn to rhinoceros horn) owing to its milder potency.

Modern Research

3 published studies investigating the pharmacological effects or clinical outcomes of Shui Niu Jiao

1

Antipyretic and Antioxidant Activities of the Aqueous Extract of Cornu Bubali (Water Buffalo Horn) (Preclinical study, 2010)

Liu R, Wang M, Duan JA. Am J Chin Med, 2010, 38(2): 293-306.

This preclinical study tested water buffalo horn aqueous extract in two fever models in animals (yeast-induced and skimmed milk-induced). The extract significantly reduced rectal temperature in both models. It also inhibited prostaglandin E2 (PGE2) production in rat brain vascular cells, protected cells from oxidative damage, and enhanced antioxidant enzyme activities (SOD and catalase), suggesting the antipyretic mechanism involves both anti-inflammatory and antioxidant pathways.

PubMed
2

Metabolomics of the Antipyretic Effects of Bubali Cornu (Water Buffalo Horn) in Rats (Preclinical metabolomics study, 2016)

Liu R, Huang Q, Shan J, Duan JA, Zhu Z, Liu P, Bian Y, Shang EX, Qian D. PLoS One, 2016, 11(7): e0158478.

Using advanced metabolomics profiling (UPLC-Q-TOF-MS) on plasma and urine of rats with yeast-induced fever, this study identified 16 plasma and 21 urine biomarkers affected by water buffalo horn treatment. The identified metabolic pathways involved glycerophospholipid, arachidonic acid, amino acid, sphingolipid, and purine metabolism, providing a systems-level understanding of how the horn exerts its fever-reducing effects.

PubMed
3

Purification and Identification of Three Novel Antioxidant Peptides from Cornu Bubali (Water Buffalo Horn) (In vitro study, 2010)

Liu R, Zheng YQ, Duan JA, Qian DW, Guo JM, Tang YP. Peptides, 2010, 31(5): 786-793.

Three novel peptides with antioxidant activity were isolated from water buffalo horn extract using chromatographic methods and identified by mass spectrometry. All three peptides demonstrated free radical scavenging activity in DPPH assays, suggesting that bioactive peptides are among the active components responsible for the horn's therapeutic effects.

PubMed

Research on individual TCM herbs is growing but still limited by Western clinical trial standards. These studies provide emerging evidence and should be considered alongside practitioner expertise.