Sudden Vomiting

INGREDIENTS

Each pill contains the equiv. to dry:

Purple Giant Hyssop, herb 56.8mg

Nutgrass, rhiz. 37.9mg

Magnolia, bark 37.9mg

White Atractylodes, rhiz. 37.9mg

Mandarin, peel 37.9mg

Balloon Flower, root 37.9mg

Licorice, root 37.9mg

Perilla, leaf 18.9mg

Wolfporia, fruit 18.9mg

Holy Ghost, root 18.9mg

Betel, nut 18.9mg

Jujube, seed 9.5mg

Ginger, rhiz. 5.7mg

Store below 30°C

Contains 200 x 200mg pills.

AUSTL 11684

Manufactured In Australia.

Indications: sudden vomiting bought of by food poisoning and bad bacteria.

Actions: kills the bad bacteria, returns the stomach to normal.

Dosages: 12 - 15 pills, 2 - 3 times per day, or as symptoms return. Take near food.

Children: 6 months an over 1 pill per year of age up to the age of 10 as directed above.

Use with SUDDEN DIARRHEA at the same time. You may need to dissolve your pills in hot water to keep them down. Make up a few doses and sip away until you are better.

Over use, don’t under use. Treat sooner rather than later.

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Huo Xiang Zheng Qi Tang – "Sudden Vomiting"

A classical Chinese herbal formula traditionally used to settle sudden vomiting, nausea, diarrhoea and stomach upset caused by acute digestive infections, food poisoning or abrupt dietary indiscretions.

What is Huo Xiang Zheng Qi Tang?

Vomiting is one of the body's fastest defence mechanisms.

When harmful bacteria, viruses or spoiled food enter the stomach, the digestive system often responds by emptying its contents as quickly as possible. Although unpleasant, vomiting is frequently a sign that the body is trying to protect itself.

Traditional Chinese Medicine (TCM) recognised this pattern centuries ago.

Huo Xiang Zheng Qi Tang (藿香正气汤) was developed to help settle the stomach, restore digestive balance and support recovery from sudden gastrointestinal illness.

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At Chiron Medical we call it "Sudden Vomiting", because rapid-onset nausea and vomiting are among the clearest situations in which this formula has traditionally been prescribed.

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Importantly, persistent vomiting, severe dehydration, vomiting blood or vomiting associated with severe abdominal pain requires immediate medical assessment.

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A Formula with More Than 800 Years of History

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Huo Xiang Zheng Qi Tang was first recorded in the Tai Ping Hui Min He Ji Ju Fang (Imperial Grace Formulary of the Tai Ping Era) during the Song Dynasty in the 12th century.

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For centuries it has been one of East Asia's most widely used emergency digestive formulas, traditionally prescribed for what Chinese medicine describes as External Wind-Cold with Internal Dampness, a pattern often corresponding to acute gastroenteritis or food-borne digestive illness.

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Today it remains a household remedy throughout much of Asia.

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Why We Call It "Sudden Vomiting"

The hallmark of this formula is speed.

People are often perfectly well...

...then suddenly develop:

• nausea

• vomiting

• diarrhoea

• abdominal cramps

• bloating

• loss of appetite

• headache

• fatigue

The illness frequently follows:

• questionable food

• travel

• viral gastroenteritis

• excessive greasy food

• abrupt dietary changes

Chinese medicine describes this as the digestive system becoming overwhelmed by Dampness, disrupting the normal downward movement of stomach contents.

Instead of food moving down...

...it comes back up.

What Is It Traditionally Used For?

Traditionally, Huo Xiang Zheng Qi Tang is prescribed for External Wind-Cold with Internal Dampness affecting the Stomach and Spleen.

Acute Gastrointestinal Illness

• sudden vomiting

• nausea

• gastroenteritis

• food poisoning (supportive care)

• viral stomach infections

Digestive Symptoms

• diarrhoea

• abdominal pain

• bloating

• poor appetite

• stomach fullness

• excessive burping

Travel-Related Illness

Traditionally prescribed for:

• traveler's digestive upset

• motion-related nausea (pattern dependent)

• sudden dietary changes

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The Herbs That Make the Formula

A healthy digestive system works much like a well-run kitchen. Food arrives, is prepared efficiently, waste is removed and everything flows in the right direction.

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When infection, contaminated food or excessive Dampness disrupts this process, the kitchen falls into chaos. Food backs up, nausea develops, bloating follows and the body begins trying to empty the stomach rather than digest its contents.

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Huo Xiang Zheng Qi Tang acts like an experienced clean-up crew. Some herbs remove the source of the disruption, others settle the stomach, restore digestive movement and regulate fluid balance, allowing the digestive system to return to normal.

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Huo Xiang (Agastache)

Traditional Role

Huo Xiang is the foreman of the clean-up crew. It clears the digestive chaos, settles nausea and restores the stomach's natural direction, making it the principal herb for vomiting, diarrhoea and digestive upset.

Biomedical Role

Modern research suggests Huo Xiang possesses antiemetic, antimicrobial and anti-inflammatory properties while helping regulate gastrointestinal motility and supporting recovery following infectious gastroenteritis.

Zi Su Ye (Perilla Leaf)

Traditional Role

Zi Su Ye helps calm the stomach while supporting the body's early response to external pathogens. It eases nausea and helps restore digestive comfort before the disturbance becomes more deeply established.

Biomedical Role

Studies demonstrate anti-inflammatory, antioxidant and antimicrobial activity together with support for healthy digestive function.

Bai Zhi (Angelica dahurica)

Traditional Role

Bai Zhi helps clear the lingering effects of the illness, particularly when digestive upset is accompanied by headache, sinus congestion or the early stages of a viral illness.

Biomedical Role

Research suggests analgesic, anti-inflammatory and antimicrobial actions that complement the formula's management of acute gastrointestinal infections.

Ban Xia (Prepared Pinellia)

Traditional Role

When the stomach refuses to settle, Ban Xia gently turns it back in the right direction. It calms persistent nausea, reduces vomiting and helps restore normal digestive movement.

Biomedical Role

Experimental studies suggest processed Pinellia possesses antiemetic, anti-inflammatory and gastric motility regulating effects. Only properly processed Pinellia is suitable for clinical use.

Chen Pi (Aged Tangerine Peel)

Traditional Role

Once the stomach settles, digestion must begin moving again. Chen Pi relieves bloating, reduces fullness and restores the smooth passage of food through the digestive tract.

Biomedical Role

Research suggests Chen Pi supports gastric emptying, improves gastrointestinal motility and reduces abdominal bloating while demonstrating antioxidant activity.

Bai Zhu (Atractylodes)

Traditional Role

Bai Zhu strengthens a digestive system left weakened by illness. It improves the body's ability to absorb nutrients while helping clear excess fluid that contributes to diarrhoea and bloating.

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Biomedical Role

Modern research demonstrates support for intestinal barrier integrity, inflammatory regulation and healthy immune function within the gastrointestinal tract.

Fu Ling (Poria)

Traditional Role

Fu Ling helps restore balance after the storm has passed. It supports digestion while regulating excess fluid, allowing the digestive system to regain its normal rhythm.

Biomedical Role

Studies suggest immunomodulatory, anti-inflammatory and prebiotic effects together with support for gut microbiome health.

Hou Po (Magnolia Bark)

Traditional Role

When digestion grinds to a halt, Hou Po gets everything moving again. It relieves abdominal fullness, reduces bloating and restores comfortable digestive movement.

Biomedical Role

Research demonstrates gastrointestinal motility enhancing, antimicrobial and smooth muscle relaxing properties.

Da Fu Pi (Areca Peel)

Traditional Role

Da Fu Pi helps drain away the excess. It relieves bloating and abdominal distension by encouraging the healthy movement of both digestion and body fluids.

Biomedical Role

Studies suggest support for gastrointestinal motility, fluid regulation and relief of abdominal distension.

Jie Geng (Platycodon Root)

Traditional Role

Jie Geng helps coordinate the formula, restoring the normal movement of the stomach while supporting the body's natural defences during acute illness.

Biomedical Role

Research suggests expectorant, anti-inflammatory and immunomodulatory activity together with protection of mucosal tissues and support for gastrointestinal barrier function.

Gan Cao (Liquorice Root)

Traditional Role

Every recovery needs stability. Gan Cao harmonises the formula, soothes the digestive tract and ensures the stronger herbs work together gently while protecting the stomach lining.

Biomedical Role

Liquorice possesses anti-inflammatory, antioxidant and gastroprotective properties together with antimicrobial and immunomodulatory effects that support mucosal healing.

Why These Herbs Work Together

When vomiting or diarrhoea develops, the problem is rarely confined to the stomach alone. Digestion slows, fluids become disordered, inflammation develops and the normal movement of the gastrointestinal tract is disrupted.

Huo Xiang Zheng Qi Tang approaches this disturbance from several directions. Huo Xiang and Ban Xia settle nausea and restore normal stomach function, while Chen Pi, Hou Po and Da Fu Pi restart healthy digestive movement. Bai Zhu and Fu Ling strengthen digestion and regulate fluid balance, while Zi Su Ye, Bai Zhi and Jie Geng support the body's response to the underlying illness. Gan Cao harmonises the prescription and protects the digestive tract throughout recovery.

In Traditional Chinese Medicine, the formula transforms Dampness, harmonises the Stomach, regulates digestion and restores the normal downward movement of stomach contents. It is particularly suited to acute gastroenteritis, food poisoning, traveler's diarrhoea and digestive disturbances associated with external pathogens.

From a modern biomedical perspective, the constituent herbs have demonstrated antiemetic, antimicrobial, anti-inflammatory and gastrointestinal regulatory effects together with actions supporting gut barrier integrity, gastrointestinal motility and healthy microbiome function.

Rather than simply suppressing nausea or diarrhoea, Huo Xiang Zheng Qi Tang helps restore the orderly function of the digestive system, allowing the body to recover naturally from acute gastrointestinal illness.

What Does Modern Research Say?

Modern research has investigated the constituent herbs for:

Acute Gastroenteritis

• viral gastroenteritis

• bacterial gastroenteritis

• food-borne illness

Gastrointestinal Function

Studies suggest:

• improved gastric emptying

• regulation of intestinal motility

• reduction of nausea

• anti-inflammatory effects

Gut Microbiome

Research demonstrates:

• antimicrobial activity against several gastrointestinal pathogens

• support for intestinal barrier integrity

• immune regulation

Several herbs have demonstrated both antibacterial and antiviral activity in laboratory studies, complementing their traditional use during acute digestive illness.

Vomiting Isn't Always the Enemy

Although unpleasant, vomiting is often part of the body's protective response.

The goal isn't always to stop vomiting immediately.

The goal is to help the digestive system recover once the immediate threat has passed.

Chinese medicine therefore focuses on restoring normal digestive movement rather than simply suppressing symptoms.

Comparing "Sudden Vomiting" and "Sudden Diarrhoea"

Acute gastroenteritis often affects both ends of the digestive tract, but the dominant symptom usually determines which formula is most appropriate.

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Huo Xiang Zheng Qi Tang ("Sudden Vomiting") is traditionally prescribed when the illness begins in the stomach. Nausea, vomiting, loss of appetite, abdominal fullness and an inability to keep food or fluids down are the defining features. Its primary role is to calm the stomach, restore the normal downward movement of digestive contents and support recovery from acute digestive infections.

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Huang Lian Jie Du Tang ("Sudden Diarrhea"), by comparison, is used when the illness has become dominated by intense Heat and inflammation within the intestines. Profuse diarrhoea, burning abdominal pain, fever, foul-smelling stools and significant inflammation indicate that the lower digestive tract has become the primary focus. The formula works by clearing Heat, reducing inflammation and helping the body recover from severe gastrointestinal infection.

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In clinical practice, these formulas are often viewed as treating different stages—or different locations—of the same illness. A patient who begins with persistent vomiting may later develop severe diarrhoea as the infection progresses through the digestive tract. Likewise, some patients present with both symptoms simultaneously, although one pattern is usually more dominant than the other.

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Huo Xiang Zheng Qi Tang - Sudden Vomiting - Stomach - Nausea, vomiting, abdominal fullness, inability to keep food or fluids down

Huang Lian Jie Du Tang - Sudden Diarrhea - Intestines - Profuse diarrhoea, burning abdominal pain, Heat, foul-smelling stools, inflammatory digestive illness

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Together, these formulas demonstrate one of the great strengths of Traditional Chinese Medicine: treatment follows the dominant pattern rather than the diagnosis alone. Two patients may both have gastroenteritis, yet one requires support to settle the stomach and stop vomiting, while the other needs to cool severe intestinal inflammation and control diarrhoea. Choosing the right formula depends on understanding where the illness is acting most strongly and how it is affecting the digestive system.

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Comparing the Chiron Medical Digestive Formulas

Each digestive formula treats a different digestive pattern.

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Huo Xiang Zheng Qi Tang - Sudden Vomiting - Acute nausea, vomiting and gastroenteritis - Acute Dampness disrupting stomach function

Bao He Tang - Bloating - Overeating and food stagnation - Excess food accumulation

Jian Pi Tang - Indigestion - Chronic digestive weakness - Spleen Qi deficiency

Run Chang Tang - Constipation - Dry sluggish bowel - Intestinal dryness

Shen Ling Bai Zhu Tang - Control Sugar - Long-term digestive weakness with metabolic dysfunction - Spleen Qi deficiency with Dampness

Understanding the Digestive Timeline

The Chiron Medical digestive formulas often follow the natural progression of illness.

Sudden Vomiting

↓

The acute illness settles...

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Bloating

Residual food stagnation remains.

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Indigestion

Digestion becomes weak following illness.

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Control Sugar

Long-term digestive recovery improves metabolic health.

This progression reflects the way Chinese medicine treats the digestive system as a dynamic process rather than a collection of isolated symptoms.

For Traditional Chinese Medicine Practitioners

Classical Pattern

External Wind-Cold with Internal Dampness

Typical presentation:

• vomiting

• diarrhoea

• nausea

• abdominal fullness

• chills

• headache

• greasy tongue coating

• slippery pulse

Formula Strategy

Huo Xiang Zheng Qi Tang:

• Resolves Dampness.

• Harmonises the Stomach.

• Stops vomiting.

• Regulates Qi.

• Strengthens digestion.

Common Clinical Modifications

Frequently adapted for:

• acute gastroenteritis

• food poisoning

• traveler's diarrhoea

• motion sickness

• post-infectious digestive recovery

For Medical Doctors

Proposed Biomedical Actions

Current research suggests the constituent herbs influence:

• gastric motility

• intestinal permeability

• inflammatory cytokines

• oxidative stress

• gut microbiota

• antimicrobial defence

• autonomic regulation of digestion

Major bioactive compounds include:

• patchouli alcohol (pogostone derivatives)

• honokiol

• magnolol

• hesperidin

• atractylenolides

• glycyrrhizin

Collectively these compounds demonstrate antiemetic, antimicrobial, anti-inflammatory and gastroprotective properties.

Potential Herb–Drug Considerations

Clinical monitoring is advisable in patients taking:

• antiemetic medications

• antibiotics

• antidiarrhoeal medications

• anticoagulants (general botanical precaution)

Patients with persistent vomiting, inability to keep fluids down, high fever, severe abdominal pain, signs of dehydration, altered consciousness or blood in the vomit or stool require urgent medical assessment. This formula is intended as supportive care and should not delay appropriate emergency treatment.

Helping the Stomach Find Its Balance Again

Few illnesses make us feel as miserable as sudden vomiting.

The body loses fluids.

Energy disappears.

Even a sip of water can feel impossible.

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Huo Xiang Zheng Qi Tang has been trusted for centuries because it recognises that the stomach is trying to restore balance after being overwhelmed.

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That is why we call it "Sudden Vomiting."

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It reminds us that while vomiting is often the body's first line of defence, recovery depends on helping the digestive system regain its natural rhythm—so food, fluids and energy can once again move in the right direction.

Key Takeaways

• Huo Xiang Zheng Qi Tang is a classical Chinese herbal formula first recorded during the Song Dynasty for acute digestive illnesses characterised by sudden nausea, vomiting and diarrhoea.

• At Chiron Medical it is called "Sudden Vomiting" because rapid-onset vomiting is one of its most recognisable traditional indications.

• It works by helping restore normal stomach function, reducing nausea and supporting recovery from acute digestive upset.

• Modern research supports antiemetic, antimicrobial, anti-inflammatory and gastroprotective actions of its constituent herbs.

• The formula should be prescribed by a qualified Chinese medicine practitioner and used alongside appropriate medical care. Persistent vomiting, dehydration, severe abdominal pain or blood in the vomit or stool require urgent medical assessment.

Clinical Perspective

Within the Chiron Medical digestive collection, Huo Xiang Zheng Qi Tang ("Sudden Vomiting") is the acute care formula. While Bao He Tang ("Bloating") treats food stagnation after overeating, Jian Pi Tang ("Indigestion") rebuilds weakened digestion, Run Chang Tang ("Constipation") restores bowel lubrication and Shen Ling Bai Zhu Tang ("Control Sugar") supports long-term digestive and metabolic health, Huo Xiang Zheng Qi Tang addresses the very beginning of an acute gastrointestinal illness. It is designed for the patient who was well yesterday but today is suddenly overwhelmed by nausea, vomiting and digestive upset. Together, these formulas illustrate one of the enduring strengths of Traditional Chinese Medicine: choosing treatment according to the stage and pattern of illness, rather than simply the symptom alone.

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Perfect. This is exactly how I think the Clinical Insights section should read in the Chiron style—short, clinically useful and explaining why the combinations work rather than simply listing them.

Clinical Insights

Acute Gastroenteritis

Acute gastroenteritis can present in different ways. Some people experience profuse diarrhoea, while others develop fever, chills or a lingering digestive upset after the initial infection has settled.

Depending on the predominant presentation, Huo Xiang Zheng Qi Tang combines particularly well with:

• Tong Xie Yao Fang when diarrhoea remains the dominant symptom. Together the formulas calm intestinal irritation, reduce urgency and help restore normal bowel function.

• X Factor (Xiao Chai Hu Tang) when digestive symptoms are accompanied by alternating chills and fever, suggesting the infection is still active within the body's immune response.

These combinations allow treatment to be tailored to the stage and presentation of the illness while continuing to support normal digestive recovery.

Viral Upper Respiratory Infection with Digestive Symptoms

Many viral illnesses begin with nausea, poor appetite or abdominal discomfort before respiratory symptoms become prominent. Supporting digestion while assisting the body's immune response often improves recovery.

Depending on the presentation, combine with:

• X Factor (Xiao Chai Hu Wan)when fever, chills and systemic symptoms remain prominent.

• No.1 Flu & Fever  (Yin Qiao Wan) during the early stages of viral upper respiratory infections with sore throat, fever and Heat signs.

These combinations support both the digestive system and the body's response to acute viral illness.

Irritable Bowel Syndrome (IBS)

Many people living with IBS experience a digestive system that remains sensitive long after the original trigger has resolved. Episodes of bloating, abdominal discomfort and altered bowel habit often reflect both impaired digestive regulation and increased gut sensitivity.

Huo Xiang Zheng Qi Tang combines particularly well with:

• Tong Xie Yao Fang  when abdominal pain and diarrhoea are triggered or worsened by stress.

Together these formulas calm the digestive tract while helping restore more resilient gastrointestinal function.

Malabsorption & Chronic Digestive Weakness

After prolonged illness or chronic digestive disorders, the gut may struggle to efficiently absorb nutrients. Recovery often requires rebuilding digestive capacity rather than simply relieving symptoms.

For patients with malabsorption or chronic digestive weakness, combine with:

• Control Sugar (Shen Ling Bai Zhu San) to strengthen digestion, improve nutrient absorption and support intestinal barrier function.

• Si Jun Zi Tang where fatigue, poor appetite and chronic digestive weakness predominate.

These combinations focus on rebuilding digestive efficiency while supporting long-term recovery.

Morning Sickness

Although morning sickness is a normal part of many pregnancies, persistent nausea can significantly affect hydration, nutrition and quality of life. Treatment should always be gentle and appropriate for pregnancy.

Huo Xiang Zheng Qi Tang combines particularly well with:

• Clear the Throat (Ban Xia Hou Po Tang)when nausea is accompanied by a sensation of fullness in the throat or upper abdomen together with emotional tension.

• Angry Gallbladder (Wen Dan Tang) when nausea is associated with persistent stomach upset, poor appetite and digestive discomfort.

Together these formulas help settle the stomach while supporting normal digestive function throughout pregnancy.

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