A practical guide to Jiao Liu Shen Qu: what it is, how Traditional Chinese Medicine uses it, the classical formulas it appears in, and who should be careful with it.
Last reviewed Oct 28, 2026| Latin Name | Massa Medicata Fermentata |
|---|---|
| Chinese Name & Pinyin | 焦六神曲 · Jiao Liu Shen Qu |
| Medicinal Part | Others |
| The item | Jiao Liu Shen Qu is the charred fermented leaven of flour and bran with five herb juices. Raw or stir-fried Shen Qu and Chao Mai Ya are not this drug. |
| Nature and channels | Neutral, sweet, acrid. Enters the Spleen and Stomach. Neutral sweet acrid transforms food stagnation and fortifies the spleen. |
| Pharmacopoeia line | Transforms food and regulates the center; fortifies the spleen and harmonizes the stomach. Used for food stagnation with bloating, poor appetite, sour burps, and sluggish digestion. |
| Pattern cues | Overfull belly. Sour burps. Bad breath. Poor appetite. Post-meal bloating. |
| In this article | Jiao Liu Shen Qu versus Chao Mai Ya and the milder processed forms. Transforming food versus fortifying the spleen. Why the charring matters. Who should skip it. Home porridge and tea. |
Jiao Liu Shen Qu (焦六神曲; Jiāo Liù Shén Qū; Latin: Massa Medicata Fermentata; English: charred medicated leaven) is the classic Chinese digestive leaven — flour and bran fermented with the juices of water pepper, wormwood, cocklebur, red adzuki bean, and bitter apricot kernel — then fried darker than the stir-fried form, so it smells toasty and its food-transforming edge is sharper. It is neutral, sweet, and acrid, enters the Spleen and Stomach channels, and its core actions are to transform food stagnation, and to fortify the spleen and harmonize the stomach. It is the stronger charred member of the digestant family, still gentle enough for a weak spleen with food that will not move. The usual amount is 10–15 g in a decoction. It does not need first, last, or wrapped decoction handling, and it can go into porridge or tea.
It is not Chao Mai Ya. Stir-fried malt is sweet, slightly warm, and leans to wheat-and-starch foods while moving qi; it also reduces milk supply in nursing women. It is not the raw or lightly fried Shen Qu either — raw pieces are harder and blunter, while the charred form digs deeper. In yin deficiency with fire — dry mouth, scanty tongue coat, warm palms — or in plain spleen weakness with no stagnation, using it on your own is a poor match. Severe belly pain, or vomiting that will not stop, needs a clinic first. Do not take it yourself for a long time.
It is used most often for three patterns:
Neutral, sweet, and acrid, it is not a daily "digestion pill" to keep piling on. Moving and draining when there is no food stagnation wastes spleen qi.
When food stops in the middle burner, or spleen qi is too weak to move it, the belly fills, breath turns sour, and appetite drops. Jiao Liu Shen Qu is neutral, sweet, and acrid. It helps digestion and steadies the spleen, which is why it appears in Bao He Wan (Harmony-Preserving Pill)–type formulas. It assists more than it pushes. In yin deficiency with fire, with no stagnation to move, more makes it worse.
Jiao Liu Shen Qu is not a catch-all digestion herb. In yin deficiency with fire, in pregnancy, or with no food stagnation to move, 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.
Identification & Quality Standard
Massa Medicata Fermentata
Botanical Origin
The fermented mass of Massa Medicata Fermentata, scorched.
Production Regions
Produced nationwide.
Quality Requirements
Superior is dry, crisp, with burnt aroma.
Square or rectangular blocks. Surface scorched black, rough. Hard and brittle. Scorched aroma, slightly bitter taste.
Classic texts and trade experience favor leaven made in several provinces of the lower Yangtze region, but quality still depends on the raw materials, fermentation, drying, and storage. Good Jiao Liu Shen Qu comes as irregular dark pieces, scorched yellow to brown, loose and porous, with gray-white or light-brown fungal filaments on the break, a toasted-bran fragrance, and a faint fermented note. The raw leaven is earth-yellow and lighter-smelling. The common fake is leaven made from bran or flour alone — no fungal filaments, weak smell, and far less effective — check before buying.
Sweet, Acrid; WarmSpleenStomach
Early doctors leaned on a spleen-fortifying, center-harmonizing side; later doctors stressed the digesting side — especially after charring, where the food-transforming work is sharper. Some drew the scope: it fits spleen weakness with food stagnation, but plain weakness without stagnation should not use it long, so the clearing does not wear the spleen down. Jiao Liu Shen Qu is not a universal herb.
Traditional Functions
Promotes digestion and harmonizes the stomach.
(1) Traditional action: clearing food stagnation and helping the spleen-stomach digest again. (2) Typical patterns: after unwise eating — full belly, sour burps, bad breath, foul or sticky stools, and a thick greasy tongue coat. (3) Usual pairings: Shan Zha (hawthorn) and Mai Ya (malt) to cover different foods; with spleen weakness, Bai Zhu (atractylodes) and Fu Ling (poria) alongside. (4) Not for self-use: plain spleen weakness without stagnation — the clearing can wear the spleen down.
(1) Traditional action: steadying a tired spleen-stomach so food transports normally again. (2) Typical patterns: long-standing poor appetite, post-meal bloating, loose stools, and fatigue. (3) Usual pairings: Dang Shen (codonopsis) and Shan Yao (Chinese yam) to support the tonic side. (4) Not for self-use: spleen-stomach discomfort from external damp-heat or stagnation turning to heat — the push can add to the heat.
Jiao Liu Shen Qu pairs classically with Chao Mai Ya: Jiao Liu Shen Qu digests grain-and-rice stagnation, Chao Mai Ya handles wheat-and-starch foods, and together they cover most everyday food stagnation while steadying the stomach. This pair fits the fullness and sour burps of mixed heavy meals — and belongs to a practitioner's pattern diagnosis, not self-pairing.
Modern research offers useful context, but Traditional Chinese Medicine prescribes on whole-pattern diagnosis rather than isolated compounds.
Detected in Liu Shen Qu (including the charred form) are flavonoids, alkaloids, and terpenoids from the raw plants, plus fermentation products such as amylase and protease enzymes, B vitamins, and yeast. Some constituents show mild digestion-helping activity in dish experiments, and animal work has seen improved digestion in mice — but no sufficient human study has reached a firm conclusion.
Current work centers on the digestion-related active constituents and their mechanism. Studies suggest some fermentation enzymes can break down starch and protein in dish conditions; animal work has seen faster stomach emptying and better gut movement after feeding the leaven. Most work is still experimental — human verification is needed.
Nature and flavor: Jiao Liu Shen Qu is neutral, sweet, and acrid — even and mild; Chao Mai Ya is sweet and slightly warm — a touch warmer, comfortable for a cold spleen. Focus: Jiao Liu Shen Qu digests all kinds of food while steadying the spleen and stomach; Chao Mai Ya leans to wheat-and-starch foods, moves qi, and reduces milk supply in nursing women. Tendency: Jiao Liu Shen Qu harmonizes the middle — balanced help for spleen qi; Chao Mai Ya tends to lift and move spleen qi. Best fit: Jiao Liu Shen Qu for all-round food stagnation, especially with a tired spleen — bloating, poor appetite, irregular stools; Chao Mai Ya for wheat-and-starch stagnation, or postpartum milk reduction in mind. Who should avoid: Jiao Liu Shen Qu calls for care in yin deficiency with fire (dry mouth, warm palms) and in plain weakness without stagnation; Chao Mai Ya calls for care in nursing women — it can cut milk. Where you meet them: Jiao Liu Shen Qu in spleen-fortifying digestant formulas and long gentle care; Chao Mai Ya in short digestion formulas and milk-reduction use.
In short, Jiao Liu Shen Qu is neutral, digests food all-round, and steadies the spleen; Chao Mai Ya is warm, leans to starch foods, and lifts stomach qi. Both can appear in food-stagnation care — but they are not stand-ins for each other.
A formula is a coordinated team; a single herb cannot copy a full formula's effect. The doses and pairings are designed as a whole, and a herb that works in a formula does not automatically work the same way alone. Do not self-formulate from web articles, and do not use a single herb to stand in for a prescribed formula.
Example 1 — Jiao Liu Shen Qu tangerine porridge: Jiao Liu Shen Qu 5 g with Chen Pi 3 g, gauze-wrapped and simmered in water for 20 minutes; strain, then cook 50 g of rice in the liquid until soft. Fit: mild fullness and poor appetite from unwise eating — especially for a tired spleen; 1–2 times a week, not long-term. Not for: yin deficiency with fire (dry mouth, warm palms) or plain weakness without stagnation. Example 2 — Jiao Liu Shen Qu malt tea: Jiao Liu Shen Qu 3 g with Chao Mai Ya 5 g, steeped in boiling water for 10 minutes. Fit: mild food stagnation — post-meal bloating, sour burps; 2–3 times a week, each cup re-steeped once or twice. Not for: nursing women (Mai Ya reduces milk) or pregnancy.
Compared with the raw or lightly fried leaven, the charred form transforms food more strongly while the spleen-fortifying side softens slightly. At home, no first, last, or wrapped handling is needed — it goes into the pot or the cup directly. Different forms cannot be converted directly: the food-use amount is about 3–5 g, while the prescription dose is usually 10–15 g.
The classic range is 10–15 g; food-use amounts are 3–5 g. Not for long continuous use — usually no more than 3 days per course; if nothing settles, consult a practitioner or pharmacist. Children and the elderly use about half the dose, under professional guidance.
Yin deficiency with fire — dry mouth, red tongue with a scanty coat, warm palms — the push can add to the heat; plain spleen weakness without stagnation — the clearing can wear the spleen down; pregnancy and nursing — pregnancy calls for care and a consultation, and nursing women should avoid pairing with milk-reducing herbs such as Chao Mai Ya; children and the elderly — adjust the dose under guidance; liver or kidney impairment — use under a doctor's direction; allergy to the raw plants (water pepper, wormwood) — possible sensitivity; people on regular medicines — check for interactions first.
Jiao Liu Shen Qu may affect the absorption or metabolism of anticoagulant, blood-pressure, blood-sugar, and sedative medicines — anyone on them should consult a doctor or pharmacist first. No blanket "food clash" with ordinary foods is established, but herbs can interact with specific medicines. While using it, keep cold, greasy, and spicy foods light, so the spleen is not overloaded.
The herb is mild, and reactions are few at normal doses, but overuse can bring worse bloating, nausea, or vomiting. Stop and seek care at once for marked discomfort, an allergic reaction (rash, itching, trouble breathing), persistent vomiting, confusion, or a rapid worsening of symptoms.
Nong's Jiao Liu Shen Qu (Charred Medicated Leaven) Single Herb 5:1 Concentrated Granules
$60.31
Hoi Tin Bao He Wan (Preserve Harmony Formula) 5:1 Concentrated Granules
$24.93
Nong's Bao He Wan (Preserve Harmony Formula) 5:1 Concentrated Granules
$49.11
Han's Bao He Wan (Preserving Harmony Formula) 5:1 Concentrated Granules
$51.57
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.
