Ban Xia Qu半夏曲
Pinelliae Fermentata Massa · Fermented Pinellia Cake · Pinellia Leaven
Overview
- · — of Ban Xia.*
A fermented preparation rather than a plant part: Ban Xia is ground with wheat flour and ginger juice, sometimes with alum and a few aromatic herbs, moistened and left to ferment, then dried and cut into small cakes. Fermentation was the traditional way of taming Ban Xia's irritancy while adding something the raw herb does not have — the food-moving, digestion-settling character that every (leaven) preparation carries.
The result is milder and more rounded than Ban Xia itself. It is chosen when phlegm and food stagnation appear together: a damp cough in someone whose appetite is poor and whose epigastrium feels full, or a child with a phlegmy cough and an unhappy stomach. Because it crumbles in water it is wrapped before decocting.
Nature & Flavor
Acrid, sweet · WarmChannels
Spleen · Stomach · LungTypical Dosage
6–12 g in decoction, wrapped so the cake does not disperse and cloud the liquid.Actions
3 core actions
- Transforms phlegm, stops coughDamp-phlegm cough with copious sputum and a full chest. Gentler than Ban Xia and easier on the stomach, which is why it is often preferred for children and for patients with a delicate digestion.
- Moves food, resolves stagnationThe contribution of the fermentation: poor appetite, epigastric fullness, belching and loose stool where undigested food and damp phlegm are tangled together. This is what distinguishes it from every other Ban Xia preparation.
- How it differs from the other preparationsQing Ban Xia dries damp, Jiang Ban Xia stops vomiting, Fa Ban Xia harmonises the middle, clears hot phlegm — and Ban Xia Qu adds digestive movement. Choose it when the phlegm problem is inseparable from the food problem.
In Formulas
Formulas containing Ban Xia Qu
Indications & Clinical Uses
- Damp-phlegm cough with copious sputum and chest fullness
- Cough accompanied by poor appetite, epigastric fullness and belching
- Food stagnation with damp and nausea in a patient with weak digestion
- Children's phlegmy cough with an unsettled stomach
Western Medical Keywords
Searchable condition terms
Contraindications
Cautions
Milder than Ban Xia, but it is still a Ban Xia product and the same restrictions follow it.
- The applies. Do not combine with Chuan Wu, Cao Wu or Fu Zi, processed or raw. Fermentation changes the herb's character but not its classical incompatibility.
- It is made from raw Ban Xia. Fermentation reduces the irritancy; it does not make the starting material harmless. Use a properly made commercial preparation and do not attempt to ferment it at home.
- Quality is not standardised. Ban Xia Qu is made to regional processing standards rather than a single national monograph, and recipes differ — some contain alum, some add apricot kernel, wormwood or knotweed, some vary the ratio of flour to herb. Buy from a supplier who will state the composition, and check it before dispensing to anyone with an allergy or a wheat intolerance, since the base is wheat flour.
- Still drying and warm. Unsuitable on its own for dry cough from yin deficiency, for dry or hot phlegm, and for bleeding conditions.
- Wrap it. Decocted loose it breaks apart and clouds the decoction.
Contraindicated in pregnancy: Use with caution in pregnancy, as with Ban Xia itself. It is the gentler preparation, and its digestive action makes it a reasonable candidate where nausea and poor appetite dominate, but the decision belongs to the treating practitioner and the course is kept short.
For licensed practitioners’ reference only
References
- 半夏曲 is a fermented preparation described in the Ming and Qing 本草 and processing literature; sources differ on which text first records it, and no first source is asserted here.
2. Bensky, Clavey & Stöger. Chinese Herbal Medicine: Materia Medica, 3rd ed.
3. 《中华人民共和国药典》— for the parent herb 半夏, including the incompatibility with 川乌／草乌／附子.
4. Provincial 中药炮制规范 govern the composition of 半夏曲; formulations differ between makers.
Professional reference notice. Entries are scholarly references for licensed TCM practitioners and students — not medical advice, and not a recommendation to self-prescribe. Chinese herbal formulas should be used under the guidance of a qualified practitioner. Content is an original editorial compilation by Cura x Cura, cross-checked against the cited references.