What Yin Qiao San is for
The skin this powder is for erupts at the very start of a feverish illness: a fine rash or weals that appear in the first day or two, with a surface that is hot to the touch. Wind-Heat is still at the surface, so the eruption is new, the skin is red and raised rather than thickened, and the whole picture has been there for hours or days. The powder releases the surface gently and cools the Heat at the same time, before the pathogen settles inward.
The eruption is new and still moving: small red papules or raised weals that come up over the upper body, itch, and change within hours, with the skin hot and slightly dry around them. In the early stage of chickenpox the spots arrive in crops with the fever, and in urticaria the weals appear and fade and appear again. The surface has not had time to thicken or scale, which is why this is a formula for days rather than weeks.
Jin Yin Hua and Lian Qiao clear Heat and resolve toxicity, and they are the two that do most of the cooling. Bo He, Niu Bang Zi, Jing Jie and Dan Dou Chi release the surface and vent the eruption outward, so the rash is not driven inward, while Jie Geng, Lu Gen and Gan Cao protect the fluids that the Heat is consuming. Dan Zhu Ye clears Heat from the Heart, which the tradition links to hot, restless eruptions.
It is used in the first day or two and stopped once the fever breaks and the eruption fades; later in an illness the pathogen has moved inward and a different approach is needed. It is not for chronic eczema or for a settled eruption with thickening and dryness, and it is not for Wind-Cold, where the skin is pale and the person feels chilled. A feverish rash in a child needs medical assessment, and the powder is given alongside that care.
Actions
- Disperses Wind-Heat and releases the exterior
- Clears Heat and resolves toxicity
- Benefits the throat
- Vents rashes and clears the surface
Properties
- Taste and temperature: Predominantly pungent and cool with a sweet note. Pungent and cool releases Wind-Heat, sweet protects the Stomach and generates fluids.
- Organs: Lungs, Heart, Stomach
- Channels: Lung, Heart, Stomach
The pattern behind it
The pattern is Wind-Heat at the surface. The pathogen is still outside but the Heat is already present, which is why the throat is sore and the tongue tip is red. Releasing the surface clears the pathogen and cooling removes the Heat, which is why it must be used early rather than after the illness has settled inward.
Composition
The herbs in Yin Qiao San, with their role and dose.
| Role | Herb | Dose | Properties | Why it is there |
|---|---|---|---|---|
| King | Jin Yin Hua | 9 to 15 g | Cold, Sweet | Clears Heat and resolves toxicity while releasing the surface gently. |
| King | Lian Qiao | 9 to 15 g | Slightly cold, Bitter | Clears Heat and resolves toxicity, particularly for the throat and upper body. |
| King | Bo He | 3 to 6 g | Cool, Pungent | Releases Wind-Heat and clears the head and throat, with a light aromatic quality. |
| King | Niu Bang Zi | 6 to 9 g | Cold, Pungent, bitter | Benefits the throat and vents rashes, used for a raw throat and an emerging eruption. |
| Jing Jie | 3 to 6 g | Slightly warm, Pungent | A light release of the surface that helps vent the pathogen and the rash. | |
| Dan Dou Chi | 3 to 6 g | Cool, Sweet, pungent | Releases the exterior gently, used where a mild chill accompanies the Heat. | |
| Jie Geng | 3 to 6 g | Neutral, Bitter, pungent | Benefits the throat and directs the formula upward to the head and chest. | |
| Dan Zhu Ye | 3 to 6 g | Cold, Sweet, bitter | Clears Heat from the Heart and settles restlessness. | |
| Envoy | Lu Gen | 15 to 30 g | Cold, Sweet | Clears Heat and generates fluids, addressing the thirst and supporting recovery. |
| Gan Cao | 3 to 6 g | Neutral, Sweet | Harmonises the formula and benefits the throat. |
Patterns it treats
Wind-Heat
New, hot, red eruptions that arrive at the start of a feverish illness, as fine papules or raised weals that itch and change within hours. Wind-Heat is still at the surface, so the rash is recent, raised and moving rather than thickened and settled.
How the formula is built
The formula releases and cools in balance, with a strong bias toward the throat. Two toxin-resolving herbs and four surface-releasing herbs deal with the pathogen while it is still outside, and the throat and fluid herbs address the symptoms it has caused. Because it targets the surface, it is used for days rather than weeks.
Skin conditions it is used for
Where this formula appears in the skin conditions of the library.
Preparation and use
Taken as a powder in warm water, or decocted lightly so the aromatic herbs are not lost, in two or three divided doses.
Modifications
- If the throat is very sore, throat-benefiting herbs are increased.
- If the cough dominates, Lung herbs are added.
- If the Heat is marked, more cooling is added.
- If the rash is the main issue, herbs that vent rashes are increased.
Timing
Taken in two or three divided doses; the powder is usually taken with warm water.
Duration
Acute use: one to five days, stopped once the fever breaks and the surface symptoms resolve.
Diet while taking it
Light cooling food and warm fluids; avoid spicy and greasy food during the acute stage.
Safety
Contraindications
Avoid in exterior Wind-Cold, where strong chills, no sore throat and a pale tongue indicate the opposite pattern. Avoid in chronic or internal conditions: this is a surface formula for days, not weeks.
Interactions
No major interaction is recorded beyond the general caution of taking herbal formulas alongside other medication without professional advice.
Pregnancy
Generally considered safe for short-term use in pregnancy on the basis of clinical precedent, though professional guidance is needed.
Breastfeeding
Considered acceptable under professional guidance for short courses.
Children
Frequently used in children for early colds with sore throat, in reduced dose.
Before you use it
Recorded from the classical record and rewritten in this project's own words. Educational only: not a prescription, and a febrile rash in a child needs medical assessment.
General safety references
General references for herbal hepatotoxicity and herb-drug interactions; they are not specific to this formula.
- Review article: Herbal hepatotoxicity - an update on traditional Chinese medicine preparations. Alimentary Pharmacology & Therapeutics, 2014. PMID: 24844799.
- Interactions between herbal medicines and prescribed drugs: an updated systematic review. Drugs, 2009. PMID: 19719333.
- Warfarin and food, herbal or dietary supplement interactions: a systematic review. British Journal of Clinical Pharmacology, 2021. PMID: 32478963.
Selected PubMed records
Real PubMed records for the modern, non-TCM discussion of this formula. They are references, not a claim that the formula is proven for any skin condition.
- Pilot study of the use of Yin Qiao San in children with conventional antipyretic hypersensitivity.. Asia Pacific allergy, 2015. PMID: 26539405.
Origin and history
Wen Bing Tiao Bian (温病条辨, Systematic Differentiation of Warm Diseases) by Wu Jutong, Qing dynasty, 1798.
Wu Jutong placed the formula first in his discussion of warm diseases, because the earliest stage is where treatment is most effective. It became the standard Wind-Heat formula and is still used at the first sign of a sore throat with fever, including where a rash begins with the illness.
Classical record
Wu Jutong recorded the powder as the primary treatment for Wind-Heat at the surface, with sore throat, fever and a red tongue tip, to be used early before the pathogen moves inward.
Wen Bing Tiao Bian (温病条辨, Systematic Differentiation of Warm Diseases), Wu Jutong, Qing dynasty, 1798.
Evidence note
No controlled trial of this treatment in skin conditions was identified for this entry. What is described here rests on the classical and later materia medica record and on traditional clinical use, not on controlled trial evidence, and it is not a prediction of benefit. Where skin-specific research does exist it is linked above.
Common questions
Can it be used for skin problems?
Only where the skin problem begins with a Wind-Heat illness, such as early chickenpox or hives with a sore throat. It is not a treatment for chronic eczema.
How quickly should it be started?
In the first day or two, before the illness settles inward. Once the pathogen has moved deeper, a different approach is needed.
How long is it taken?
One to five days, stopped once the fever breaks and the throat settles.
Is it suitable for children?
It is commonly used in children in reduced dose, but a febrile rash should be assessed by a doctor.