What Ma Huang Fu Zi Xi Xin Tang is for
The skin picture is cold, pale and firm or tight, in a person whose whole surface reads as cold. The Cold has settled because the Yang is too weak to push it out, so tissue stays tight and colour stays poor, and the formula warms the Yang and opens the surface together. It is a short, potent course and requires supervision.
The tissue is cold, pale and tight. Colour is poor and slow to return after pressure, the surface feels cold to the touch, and the skin may be firm rather than supple. It is not red, hot or weeping, and there is no inflammation to clear. The picture is one of tissue that has lost its movement: the Cold has settled into the channels, the surface has closed against it, and nothing warms the area enough to relax it.
The tradition explains that the Cold could only settle because the Yang was too weak to expel it. Ma Huang opens the surface and the Lungs, giving the Cold a route out; Zhi Fu Zi warms the Yang so there is force behind the release; Xi Xin warms the channels and reaches the depths where Cold has gone. All three are warming, and two are potent. That is why the formula is small but strong: it provides both the force and the route, which is what a depleted person lacks.
It is not for Heat. Where the skin is red, hot or inflamed, the warming herbs would feed the problem, and Heat appearing during treatment means the formula is stopped. It contains Fu Zi, Ma Huang and Xi Xin, so it is used only under professional supervision, in a short course of three to seven days. Progressive skin tightening needs medical assessment alongside it.
Actions
- Warms Yang and releases the exterior
- Disperses Cold from the channels
- Opens the Lungs
- Supports the body's ability to expel Cold
Properties
- Taste and temperature: Predominantly pungent and hot. Pungent releases and disperses, hot warms the Yang and drives out Cold.
- Organs: Lungs, Kidney, Heart
- Channels: Lung, Kidney
The pattern behind it
The pattern is exterior Cold with Yang deficiency. The Cold has entered because the Yang is too weak to resist it, and the deficiency keeps it there. Warming the Yang and releasing the surface together gives the body both the force and the route to expel it.
Composition
The herbs in Ma Huang Fu Zi Xi Xin Tang, with their role and dose.
| Role | Herb | Dose | Properties | Why it is there |
|---|---|---|---|---|
| King | Ma Huang | 6 to 9 g | Warm, Pungent, bitter | Releases the surface and opens the Lungs, giving the Cold a route out. |
| Deputy | Zhi Fu Zi | 9 to 15 g | Hot, Pungent, sweet | Warms the Yang so the body has the force to expel the Cold; toxic unless processed. |
| Xi Xin | 3 to 6 g | Warm, Pungent | Warms the channels and disperses Cold from the depths. |
Patterns it treats
Yang Deficiency with Exterior Cold
Cold, pale skin that is firm or tight, with colour slow to return and a surface that stays cold to the touch. The Cold has settled because the Yang is too weak to push it out, so the tissue never warms enough to relax.
How the formula is built
Three warming herbs with three jobs: release the surface, warm the root and reach the depths. Together they address the Cold and the deficiency that allowed it in, which is why the formula is small but potent.
Skin conditions it is used for
Where this formula appears in the skin conditions of the library.
Preparation and use
Decocted in water and taken warm, in two divided doses, under professional supervision.
Modifications
- If the Cold is severe, the warming is increased carefully.
- If the surface signs are strong, the releasing herb is adjusted.
- If Heat appears, the formula is stopped.
- If the patient is very depleted, the dose is reduced.
Timing
Taken warm in two divided doses.
Duration
Short course: three to seven days, reassessed.
Diet while taking it
Warm food and warm fluids; avoid cold raw food.
Safety
Contraindications
Avoid in Heat patterns and in anyone with a strong constitution. Requires professional supervision because it contains Fu Zi, Ma Huang and Xi Xin.
Interactions
Fu Zi can affect heart rhythm, Ma Huang interacts with cardiac and blood-pressure medication, and Xi Xin must come from a safe species. This formula requires a practitioner.
Pregnancy
Contraindicated in pregnancy because of Fu Zi and the strong dispersing herbs.
Breastfeeding
Use only under professional guidance.
Children
Used only with professional supervision 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. Fu Zi, Ma Huang and Xi Xin make this a professional-only formula, and progressive skin tightening 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.
Origin and history
Shang Han Lun (伤寒论, Treatise on Cold Damage) by Zhang Zhongjing, Eastern Han dynasty, around 220 CE.
Zhang Zhongjing recorded this formula for the patient whose Yang is too weak to expel an exterior Cold. Its three herbs work at three depths, and its potency has always required careful prescribing.
Classical record
The Treatise on Cold Damage records the decoction for exterior Cold with Yang deficiency, warming the Yang and releasing the surface together.
Shang Han Lun (伤寒论, Treatise on Cold Damage), Zhang Zhongjing, Eastern Han dynasty.
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
What is it used for?
A lingering cold in a depleted patient with chills, cold limbs and a weak pulse, without heat signs.
Is it safe without supervision?
No. It contains Fu Zi, Ma Huang and Xi Xin, all of which require professional supervision.
Can it help tight cold skin?
Only where the tightness comes from Yang deficiency with Cold, and only alongside specialist care for the underlying condition.
How long is it used?
Three to seven days, reassessed.