Roots and rhizomesHeat-clearingFagopyri Dibotrydis Rhizoma

Jin Qiao Mai (Wild Buckwheat Rhizome)

Q: What is Jinqiaomai? Is it the same as Yuxingcao or Jinyinhua?

Jinqiaomai is the dried rhizome of Fagopyrum dibotrys, a Chinese medicine used for clearing heat and detoxifying, and for expelling pus and resolving stasis. It is not interchangeable with Yuxingcao or Jinyinhua in equal amounts.

Q: What are the composition and effects of Jinqiaomai?

Jinqiaomai is slightly pungent and astringent, cool in nature, and enters the Lung meridian. Its functions are to clear heat and detoxify, and to expel pus and resolve stasis. It is used for lung abscess with purulent sputum, lung heat dyspnea and cough, and swollen painful tonsils.

Q: How to choose between raw and processed? Can Yuxingcao replace it?

The rhizome is used raw. Yuxingcao emphasizes lung abscess rather than strongly expelling pus, so it cannot replace Jinqiaomai in equal amounts. Commercial products are standardized, so the dose should not be adjusted arbitrarily.

Q: What is the dosage of Jinqiaomai? Can it be used daily as a pus-expelling tea?

A decoction dose is 15 to 45 g, or it can be stewed. Modern use requires physician-determined dosage. It is not a year-round Jinqiaomai tea, and prolonged use in pregnancy may be harmful. Lung abscess treatment requires short-term, physician-determined dosage and cannot replace evaluation.

Q: What are the contraindications of Jinqiaomai? Can pregnant women use it?

It is not suitable for pregnant women. Avoid sun exposure after taking it to prevent photosensitivity. Stop if rash or fatigue occur, and seek immediate medical care for severe lung abscess or high fever.

Q: Can Jinqiaomai clear heat, expel pus, and resolve stasis?

It can assist with lung abscess with purulent sputum, lung heat dyspnea and cough, and swollen painful tonsils. It clears heat and detoxifies, and expels pus and resolves stasis, but it is not a specific remedy for all lung abscess cases or all dyspnea and cough.

Q: Can Jinqiaomai be taken daily as a pus-expelling or detoxifying tea?

No. It is used short-term in formulas for lung abscess, and pregnancy may be harmed by prolonged use. The idea that Jinqiaomai must expel pus cannot replace evaluation, and clearing heat and expelling pus requires physician-determined formulation and dosage.

Q: How to choose between Jinqiaomai, Yuxingcao, Jinyinhua, Lugen, and Jiegeng?

Jinqiaomai clears heat and expels pus and is suited to lung abscess. Yuxingcao clears heat for lung abscess. Jinyinhua clears heat and disperses. Lugen clears heat and generates fluids. Jiegeng disseminates the lung and expels pus. Choose Jinqiaomai for expelling pus; Yuxingcao for detoxifying; Jinyinhua for dispersing; Lugen for generating fluids; and Jiegeng for benefiting the throat. Pattern differentiation applies, and large doses of Jinqiaomai are contraindicated in pregnancy.

A practical guide to Jin Qiao Mai: what it is, how Traditional Chinese Medicine uses it, the classical formulas it appears in, and who should be careful with it.

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Last reviewed Oct 28, 2026

Quick Facts

Latin Name	Fagopyri Dibotrydis Rhizoma
Chinese Name & Pinyin	金蕎麥 · Jin Qiao Mai
Medicinal Part	Roots and rhizomes
The item	Jin Qiao Mai is the dried rhizome of golden buckwheat. Houttuynia (Yu Xing Cao) and dock root (Suan Mu) are not this herb. It goes into a standard soaked decoction.
Nature and channels	Cool, pungent, bitter. Enters the Lung, Spleen, and Liver. Cool pungent bitter clears lung heat, dissolves phlegm, and resolves heat-toxin.
Pharmacopoeia line	Clears the lungs and dissolves phlegm. Resolves heat-toxin and eases swellings. Used for lung-heat cough with thick yellow phlegm, sore throat, and surface heat-toxin swellings.
Pattern cues	Lung-heat cough with thick yellow phlegm. Red swollen painful throat. Red hot swollen skin bumps.
In this article	Jin Qiao Mai versus Yu Xing Cao and dock root. Clearing lung phlegm versus resolving surface toxin. Why the dose is 10–30 g. Why cold-phlegm cough and cold digestion are cautions. Why sore throat and open sores need a clinic. Who should skip it.

What Is Jin Qiao Mai?

Jin Qiao Mai (金荞麦; Jīn Qiáo Mài; Latin: Fagopyrum dibotrys; English: golden buckwheat rhizome) is the dried rhizome of a perennial buckwheat-family plant, dug in autumn and winter after the above-ground parts wither, then washed, sliced, and dried; in some regions it is steamed with rice wine to make wine-processed Jin Qiao Mai. It is cool, pungent, and bitter, enters the Lung, Spleen, and Liver channels, and its core actions are to clear the lungs and dissolve phlegm, and to resolve heat-toxin and ease swellings. It goes into a standard decoction, soaked first and simmered for 20–30 minutes, with no pre-decocting, late addition, or wrapping. The usual amount is 10–30 g.

It is not Yu Xing Cao. Houttuynia is slightly cold and pungent, with a stronger dispersing character, better at expelling pus from lung abscess and promoting urination for painful scanty urine; Jin Qiao Mai is cooler and more settling, focused on lung phlegm-dissolving and surface swelling. It is not Suan Mu. Dock rhizome is thinner, reddish on the cut face, and sour — a different Polygonaceae look-alike. Use caution in pregnancy and nursing. People with cold-phlegm cough — thin clear phlegm, chills, a white greasy coating — should not self-use. People with cold, weak digestion, bloating and loose stools, should not self-use. Non-heat, pale slow-healing sores are a poor match.

It is used most often for three patterns:

Lung-heat cough — frequent cough, thick yellow phlegm, often with sore throat and dry mouth
Red, swollen, painful throat that makes swallowing hard — seek care
Surface heat-toxin swellings and early sores — red, hot, painful bumps — seek care

Cool, pungent, and bitter, it is not a daily "clear-the-throat buckwheat" to keep increasing. Clearing when there is no heat, or dispersing when there is no phlegm-toxin, injures Spleen yang and worsens loose stools.

When heat-toxin plugs the Lung, or a red-hot swelling rises on the throat or skin, cough with thick yellow phlegm, a swollen painful throat, and tender red bumps are common. Jin Qiao Mai is cool, pungent, and bitter. It clears lung heat, dissolves phlegm, and resolves heat-toxin, which is why it appears in Jin Qiao Mai Tang–type formulas for lung-heat cough and sore throat, and in Jin Suo Yin Kai San–type formulas for surface swellings and early sores. It clears and disperses more than it tonifies. A cold weak stomach, with cold phlegm, gets worse if more is added.

Jin Qiao Mai is not a catch-all throat or swelling root. In cold-phlegm cough, cold, weak digestion, or pregnancy, using it alone is a poor match. Whether it belongs in a formula, and at what dose, should be decided by a licensed Chinese medicine practitioner after pattern diagnosis.

Jin Qiao Mai: Materia Medica Profile

Identification & Quality Standard

Fagopyri Dibotrydis Rhizoma

Botanical Origin

The dried rhizome of Fagopyrum dibotrys (D. Don) Hara (Polygonaceae)

Production Regions

Primarily produced in the Chinese provinces of Zhejiang, Jiangsu.

Quality Requirements

Superior medicinal material is hard, large.

Macroscopic Features

Rhizomes in an irregular cluster, often with bulbous branches, uneven length and size, diameter 1~4cm. Externally brown to grayish-brown, with dense round joints and irregular longitudinal wrinkles, and numerous rootlets or scars of rootlets; apex has remnants of stem. Hard texture, not easily broken, cut surface is pale yellowish-white to yellowish-brown, with radial striations and pith at the center. faint odor, slightly astringent taste.

Where It Grows and How to Judge Quality

Traditional sources and industry experience often pay attention to the Jiangsu, Zhejiang, and Jiangxi regions, though actual quality also depends on variety, harvest timing, processing, and storage.

Good-quality Jin Qiao Mai usually looks like this:

The root is irregularly lumpy to cylindrical in shape.
The surface is brown, with longitudinal wrinkles and small bumpy growths.
It is hard, with a pale yellow-white, powdery cross-section.
It smells lightly herbal and tastes slightly astringent.

The wine-processed form has a slightly deeper color, a softer, looser texture, and a faint wine scent. Watch out for look-alikes from the same family, such as the root of Suan Mu (dock), which is thinner, reddish on the cut face, and sour — easy to tell apart by look and smell.

Traditional Properties & Historical Lineage

Nature, Flavour & Channel Tropism

Acrid, Astringent; CoolLung

1. What the Classics Recorded

Jin Qiao Mai has a clear paper trail in Chinese herbal literature. A few highlights:

Xin Xiu Ben Cao — first mentioned it, noting its use for "swellings, malignant sores, and scrofula."
Ben Cao Gang Mu — recorded that it can "help the throat and mouth, move blood and qi, and resolve heat-toxin."
De Pei Ben Cao — noted its use for throat blockage, tonsil discomfort, and back swellings.
Zhong Hua Ben Cao — added that it can "clear the lungs, dissolve phlegm, support the spleen, and drain dampness."

These records all revolve around its heat-clearing, swelling-easing, and phlegm-dissolving work.

2. How Views of the Herb Changed Over Time

Different generations of physicians read Jin Qiao Mai a little differently. Some ancient practitioners stressed its clearing side, using it for swellings and sore throats from excess heat-toxin. Others found in practice that it also supported the spleen, and began using it for spleen-deficient phlegm patterns. Some highlighted its qi-moving role, using it to help ease pain from stuck qi. These differences broadened its range, but the core direction — clearing and dispersing — never changed, and it was never treated as a cure-all.

This evolution is a good reminder of a core idea in traditional Chinese medicine: herbs are chosen to match the person, not just the symptom.

Core Efficacies & Traditional Applications

Traditional Functions

Clears heat and resolves toxin, expels pus and dispels stasis.

1. Main Use One: Clearing the Lungs and Dissolving Phlegm

What it is: The first core use of Jin Qiao Mai is to clear lung heat and dissolve phlegm.

When it was used: Traditionally for lung-heat patterns — a frequent cough, lots of thick yellow phlegm, often with a sore throat, dry mouth, or scanty dark urine.

Common partners: Often paired with Huang Qin, Sang Bai Pi, or Zhe Bei Mu to strengthen the lung-clearing, phlegm-dissolving effect. For a marked cough, Xing Ren or Jie Geng may be added.

Who should not self-use: People with a cold-phlegm cough — thin clear phlegm, chills, a white greasy tongue coating — should avoid it on their own, since it could make the cold worse.

2. Main Use Two: Resolving Heat-Toxin and Easing Swellings

What it is: The second core use focuses on resolving heat-toxin and easing swellings.

When it was used: Traditionally for heat-toxin swellings — a red, hot, painful skin bump, or a red, swollen, painful throat that makes swallowing hard, sometimes with fever, dry mouth, or constipation.

Common partners: Often paired with Jin Yin Hua, Lian Qiao, or Pu Gong Ying to strengthen the heat-resolving, swelling-easing effect. For a marked sore throat, Niu Bang Zi or She Gan may be added.

Who should not self-use: People with sores from cold, weak digestion — sores that are pale, slow to heal, with bloating and loose stools — should avoid it on their own.

3. A Classic Pairing: Jin Qiao Mai and Jin Yin Hua

A common pairing is Jin Qiao Mai with Jin Yin Hua. Jin Yin Hua is known for clearing heat, resolving toxin, and scattering wind-heat, while Jin Qiao Mai clears the lungs, dissolves phlegm, and eases swellings. Together they reinforce each other for heat-toxin patterns — sore throat, swellings, and skin bumps.

Like most pairings, this one should be matched to the person, not copied from a list. It belongs in the hands of a practitioner, not casual self-mixing.

Modern Research

Modern research offers useful context, but Traditional Chinese Medicine prescribes on whole-pattern diagnosis rather than isolated compounds.

1. Main Chemical Compounds

Modern studies have detected several groups of compounds in Jin Qiao Mai:

Flavonoids — a major active group.
Organic acids
Sterols

One important point: detecting a compound in a plant does not mean that compound produces the same effect in the human body. Lab chemistry and human response are two different things.

2. Where Research Is Heading

Research so far is mostly at the early laboratory stage. What has been observed:

In test-tube experiments, some flavonoid components showed activity against certain bacteria.
In animal studies, the extract appeared to have some anti-inflammatory effect, easing inflammation in model animals.

These are promising early findings, not proven human benefits. Human clinical research is still limited, and much more is needed before any firm conclusions can be made.

3. The Limits of Current Research

It is important to read the research honestly. Four limits stand out:

Lab results are not clinical results. Test-tube and animal findings cannot be carried straight into human use.
Extracts are not the dried herb. Modern studies often use concentrated extracts or single compounds, which differ from the whole dried herb in dose and form.
Doses and methods vary. Different studies use different doses and preparation methods, which limits how repeatable the results are.
One compound is not the whole herb. Jin Qiao Mai's traditional value comes from many compounds acting together, so a single ingredient should not be treated as the whole story.

Comparing Similar Herbs

1. What Jin Qiao Mai and Yu Xing Cao Share

Yu Xing Cao is the herb Jin Qiao Mai is most often compared with. They share quite a lot:

Both are traditionally used to clear heat and resolve toxin.
Both are used for heat-toxin sore throats and swellings.
Both are used for lung-heat coughs with phlegm.
Both may appear in everyday care for mild heat-toxin discomfort.
Both need attention to body type and dose — neither should be used in excess.

2. The Core Differences

Despite the similarities, the two herbs differ in a few practical ways:

Nature: Jin Qiao Mai is cool, pungent-bitter, with a clearer clearing character. Yu Xing Cao is slightly cold and pungent, with a somewhat stronger dispersing character.
Focus: Jin Qiao Mai is better at clearing the lungs, dissolving phlegm, and easing swellings — strong for lung-heat cough and skin bumps. Yu Xing Cao is better at easing swellings, expelling pus, and promoting urination — notable for lung abscess with purulent phlegm and for painful, scanty urination.
Direction of action: Jin Qiao Mai tends to move downward, mainly working on the Lung, Spleen, and Liver channels to clear and disperse, leaning toward lowering qi and dissolving phlegm. Yu Xing Cao tends to spread outward, mainly working on the Lung and Bladder channels to scatter and clear, leaning toward spreading lung qi and promoting urination.
Best fit: Jin Qiao Mai suits lung-heat cough with thick yellow phlegm, a red swollen throat, and surface swellings. Yu Xing Cao suits lung abscess with purulent phlegm, scanty painful urine, or a wind-heat cold with fever and cough.
Caution: Jin Qiao Mai is avoided for cold-phlegm cough and for loose stools from cold, weak digestion. Yu Xing Cao is avoided for cold-deficiency patterns and for non-heat (yin-type) sores. Both should only be used when there is a heat state.

3. The Difference in One Sentence

Jin Qiao Mai leans more toward clearing the lungs, dissolving phlegm, and easing surface swellings, while Yu Xing Cao leans toward expelling pus, easing swellings, and clearing the urine. Both can be used for heat-toxin coughs and swellings, but they are not freely interchangeable.

Classical Formulas Containing Jin Qiao Mai

Formula One: Jin Qiao Mai Tang

How it is built: In this formula, Jin Qiao Mai is the main herb (sovereign), leading the lung-clearing, phlegm-dissolving, and swelling-easing role. Huang Qin clears lung heat, Zhe Bei Mu dissolves phlegm and eases cough, and Jin Yin Hua resolves heat-toxin and soothes the throat. Together they both address the root of lung heat and ease the cough and pain — using Jin Qiao Mai alone cannot cover all these needs.

Traditional use: This formula was used for lung-heat cough with thick yellow phlegm, sore throat, and surface swellings — a classic clearing and detoxifying formula.

Modern note: Any modern use should go through proper assessment — do not self-apply just because it touches the respiratory system and surface heat.

Formula Two: Jin Suo Yin Kai San

How it is built: In this formula, Jin Qiao Mai is the core herb, resolving heat-toxin, easing swellings, and relieving pain. Pu Gong Ying strengthens the toxin-resolving effect, and Dang Gui moves blood and dissolves stasis. Together they both clear heat-toxin and disperse stagnation — using Jin Qiao Mai alone cannot move blood and stasis, so it would be slower to ease a swollen, painful bump.

Traditional use: This formula was used for surface swellings, early sores, and red, hot, painful bumps — used externally or internally to resolve heat-toxin and ease swelling.

Modern note: As with any formula, use should follow professional assessment — especially if a swelling has broken open, a practitioner must judge whether this formula fits.

Formulas vs. Single Herbs

A formula combines several herbs to create a whole effect. This is different from using a single herb in one key way:

Formulas are built for balance — multiple herbs work together to cover several roles and balance each herb's nature.
A single herb cannot copy a full formula — its effect is more limited and cannot achieve the synergy of several herbs.
Do not build your own formulas from online articles. Pairing and dosage are designed by a practitioner for a reason.

Diet & Daily Home Use

1. Home Teas and Porridge

Two gentle, everyday ways to meet Jin Qiao Mai:

Example 1 — Jin Qiao Mai clear-throat tea:

Ingredients: about 5 g of Jin Qiao Mai slices, 3 g of Ju Hua, and 2 g of Jie Geng.
Method: place all ingredients in a cup, pour over boiling water, cover, and steep for 10 minutes before drinking.
When it fits: mild sore throat, dry mouth, and a light cough with little phlegm.
Who should skip it: people with cold, weak digestion or frequent loose stools.
Frequency: about two to three times a week, one cup each time — not for long, continuous use.

Example 2 — Jin Qiao Mai phlegm-dissolving porridge:

Ingredients: about 10 g of Jin Qiao Mai slices and 50 g of rice.
Method: wrap the Jin Qiao Mai in gauze, cook it with the rice in enough water into a porridge, then remove the herb pouch before eating.
When it fits: mild lung-heat cough with thick yellow phlegm.
Who should skip it: people with cold-phlegm cough or cold, weak digestion.
Frequency: about twice a week, one small bowl each time — not for long, continuous use.

Please note: Jin Qiao Mai is a dried medicinal herb, not an ordinary food. Do not raise the dose or use it long-term on your own.

2. Dried Herb Decocting and Processing

The raw herb leans toward clearing heat-toxin and clearing the lungs, while the wine-processed form has a slightly gentler nature, suiting a milder, more balanced approach. For home use, place the slices with the other herbs in a pot, add water to cover, soak for 30 minutes, then simmer for 20 to 30 minutes. It does not require "decoct first," "add later," or "wrap" steps.

Remember that different forms are not directly convertible — the dose of the dried slices differs from the dose of an extract. Never swap one for another.

3. Dosage and How Long to Use

In traditional prescriptions, a common dose range is about 10 to 30 g. For food-style use, about 5 to 15 g is typical — smaller than the medicinal dose.

Jin Qiao Mai is not meant for long-term, continuous use. A general wellness course is about three to seven days; if symptoms do not improve, stop and check with a practitioner. Special groups should consult a professional before use, and should not set their own dose or schedule.

Contraindications & Safety Warnings

1. Who Should Avoid Jin Qiao Mai

People with cold-phlegm cough — thin clear phlegm, chills, a white greasy tongue coating.
People with cold, weak digestion — frequent bloating, loose stools, cold hands and feet.
Pregnant and nursing women — use with care; there is not enough safety data.
Children and older adults — weaker metabolism; use only under professional guidance.
People with liver or kidney concerns — best not to self-use, to avoid adding burden.
People allergic to buckwheat-family (Polygonaceae) plants — allergic responses are possible.
People on blood thinners, blood-pressure, or diabetes medications — check with a doctor first.

2. Drug Interactions and Food Notes

What deserves attention here is drug interaction:

Jin Qiao Mai may interact with blood thinners, blood-pressure medications, or diabetes medications.
There is no solid evidence of broad "food conflicts" in the way folk stories describe. The real thing to watch is herb-drug interaction — anyone on medication should check with a doctor or pharmacist.
If taking Jin Qiao Mai with other medicines, it is a good idea to space them about 1 to 2 hours apart to avoid affecting absorption or breakdown.

3. Possible Side Effects and Overuse Risks

At normal use, side effects are uncommon. Taking too much may cause stomach upset — nausea, vomiting, or stomach discomfort.

If you notice clear discomfort, allergic signs, ongoing vomiting, trouble breathing, confusion, or symptoms that worsen quickly, stop use and seek medical attention promptly.

Frequently Asked Questions About Jin Qiao Mai

What is Jinqiaomai? Is it the same as Yuxingcao or Jinyinhua?

Jinqiaomai is the dried rhizome of Fagopyrum dibotrys, Latin name Fagopyri Dibotryis Rhizoma. It is a common Chinese medicine centered on clearing heat and detoxifying, and expelling pus and resolving stasis. Yuxingcao clears heat and detoxifies for lung abscess. Jinyinhua clears heat and detoxifies while dispersing. They cannot be used interchangeably in equal amounts. Prescribe as Jinqiaomai. Caution in pregnancy.

What are the composition and effects of Jinqiaomai?

Pharmacopoeial name Jinqiaomai, Latin Fagopyrum dibotrys (D. Don) Hara. Slightly pungent and astringent in taste, cool in nature, enters the Lung meridian. Functions to clear heat and detoxify, and expel pus and resolve stasis. Used for lung abscess with purulent sputum, lung heat dyspnea and cough, and swollen painful tonsils. Clears heat and expels pus.

How to choose between raw and processed? Can Yuxingcao replace it?

Rhizome is used raw. Yuxingcao emphasizes lung abscess rather than strongly expelling pus, and cannot replace it in equal amounts. Commercial products are standardized; do not adjust arbitrarily.

What is the dosage of Jinqiaomai? Can it be used daily as a pus-expelling tea?

Decoction, 15-45g, or stewed. Modern use requires physician-determined dosage. It is not a year-round "Jinqiaomai tea." Pregnancy will be further injured by prolonged use. Lung abscess requires short-term, physician-determined dosage and cannot replace evaluation.

What are the contraindications of Jinqiaomai? Can pregnant women use it?

Not suitable for pregnant women. Avoid sun exposure after taking to prevent photosensitivity. Stop if rash or fatigue occur. Seek immediate medical care for severe lung abscess or high fever.

Can Jinqiaomai clear heat, expel pus, and resolve stasis?

It can assist lung abscess with purulent sputum, lung heat dyspnea and cough, and swollen painful tonsils. It clears heat and detoxifies, and expels pus and resolves stasis, but is not a specific remedy for all lung abscess or all dyspnea and cough.

Can Jinqiaomai be taken daily as a pus-expelling or detoxifying tea?

Lung abscess can be used short-term in formulas; pregnancy will be further injured. The idea that "Jinqiaomai must expel pus" cannot replace evaluation. Clearing heat and expelling pus requires physician-determined formulation and dosage.

How to choose between Jinqiaomai, Yuxingcao, Jinyinhua, Lugen, and Jiegeng?

Jinqiaomai clears heat and expels pus, suited to lung abscess. Yuxingcao clears heat for lung abscess. Jinyinhua clears heat and disperses. Lugen clears heat and generates fluids. Jiegeng disseminates the lung and expels pus. Choose Jinqiaomai for expelling pus; Yuxingcao for detoxifying; Jinyinhua for dispersing; Lugen for generating fluids; Jiegeng for benefiting the throat. Pattern differentiation applies, but large doses of Jinqiaomai are contraindicated in pregnancy.

How is Jinqiaomai commonly modified? What is a representative usage?

Modifications depend on the pattern. Add Yuxingcao for lung abscess; add Jiegeng for dyspnea and cough. Specify Jinqiaomai; do not substitute Yuxingcao in equal amounts for expelling pus.

How to select and store Jinqiaomai?

Choose regular Chinese medicinal materials with intact rhizomes. Discard if moldy, damp, or abnormal in odor. Store in a dry place. Purchase "Jinqiaomai"; do not substitute Yuxingcao or Jinyinhua in equal amounts for clearing heat, expelling pus, and resolving stasis.

Related Products

Nong's Jin Qiao Mai Concentrated Granules

Nong's Jin Qiao Mai (Golden Buckwheat Rhizome) Single Herb 5:1 Concentrated Granules $57.32

Medical Disclaimer — This article is provided for educational purposes only and describes traditional Chinese medicine concepts. It is not medical advice, and it is not intended to diagnose, treat, cure or prevent any disease. Always consult a qualified practitioner before using any herb, particularly if you are pregnant, nursing, taking medication or managing a diagnosed condition.