What Liu Jun Zi Tang is for
The skin picture is puffy, doughy and congested, with a sallow or dusky cast rather than a red or bright one. The explanation is a Spleen too weak to transform fluids, so Dampness and Phlegm gather and show in the tissue, and the formula strengthens the Spleen while clearing what it has failed to process. It suits the chronic stage where deficiency and Dampness sit together.
The look is heavy rather than inflamed. The tissue is puffy and slightly doughy to the touch, the colour is sallow or dusky instead of red, and the surface is greasy rather than dry. Congestion sits in the skin without the heat that would make it angry, so it reads as dullness and weight rather than as a flare. Puffiness around the eyes and a complexion that looks tired belong to the same picture. Because it comes from Dampness produced inside, it tends to settle, return and settle again rather than resolve in one episode.
The formula does two jobs at once. Ren Shen, Bai Zhu, Fu Ling and Gan Cao strengthen the Spleen, so it stops producing the Dampness in the first place; Ban Xia transforms the Phlegm that has already formed and lowers the Stomach Qi that has been pushed upward; Chen Pi moves the Qi and dries what has gathered. Tonifying without drying would leave the puffiness, and drying without tonifying would clear it only for it to return. That is why the two halves are given together, and why the formula suits a chronic picture in which the deficiency and its consequence are both present.
It is not for dry or hot skin. Where the surface is thin, dry and finely cracked, the drying herbs would take more moisture from it, and where it is red and weeping with heat, the warmth would add to the Heat. The course runs from two to eight weeks and is then reassessed, and the drying herbs are reduced if the person is dry or depleted.
Actions
- Tonifies Spleen Qi
- Transforms Phlegm and dries Dampness
- Moves Qi and relieves fullness
- Supports digestion
Properties
- Taste and temperature: Predominantly sweet and pungent with a mild bitter note. Sweet tonifies, pungent and bitter dry Dampness and transform Phlegm.
- Organs: Spleen, Stomach, Lungs
- Channels: Spleen, Stomach, Lung
The pattern behind it
The pattern is Spleen Qi deficiency with Phlegm-Dampness. The weak Spleen fails to transform fluids, which gather as Dampness and Phlegm, and that in turn further burdens the Spleen. The formula tonifies the Spleen and clears what it has failed to transform.
Composition
The herbs in Liu Jun Zi Tang, with their role and dose.
| Role | Herb | Dose | Properties | Why it is there |
|---|---|---|---|---|
| King | Ren Shen | 9 to 12 g | Slightly warm, Sweet | Tonifies Qi strongly, restoring the Spleen's force. |
| Bai Zhu | 9 to 12 g | Warm, Bitter, sweet | Strengthens the Spleen and dries Dampness. | |
| Ban Xia | 4.5 to 9 g | Warm, Pungent | Transforms Phlegm and lowers rebellious Stomach Qi, addressing the nausea and the Phlegm. | |
| Fu Ling | 9 to 12 g | Neutral, Sweet, bland | Drains Dampness and supports the Spleen. | |
| Envoy | Chen Pi | 3 to 6 g | Warm, Pungent, bitter | Moves Qi and dries Dampness, relieving the fullness. |
| Gan Cao | 3 to 6 g | Neutral, Sweet | Harmonises the formula and supports the middle. |
Patterns it treats
Damp-Phlegm
Puffy, doughy and congested skin with a sallow or dusky cast, greasy rather than dry, and a heaviness that settles and returns. The Dampness is the visible end of a Spleen too weak to transform fluids.
How the formula is built
Four herbs tonify the Spleen and two transform what it has failed to process. That combination is why it suits the picture where deficiency and Dampness coexist, which is very common in chronic skin congestion.
Skin conditions it is used for
Where this formula appears in the skin conditions of the library.
Preparation and use
Decocted in water with ginger and dates and taken warm, in two divided doses.
Modifications
- If Cold is present, warming herbs are added.
- If the Phlegm is hot, cooling herbs are added.
- If the appetite is very poor, aromatic herbs are increased.
- If the person is dry or depleted, the drying herbs are reduced.
Timing
Taken warm in two divided doses.
Duration
Two to eight weeks, then reassessed.
Diet while taking it
Avoid cold raw, greasy and sweet food, which increase Dampness.
Safety
Contraindications
Avoid in Yin deficiency and in dry patterns, since the drying herbs would worsen them. Avoid in Damp-Heat without cooling herbs.
Interactions
Ren Shen may affect blood sugar and anticoagulants, and Gan Cao can interact with diuretics, digoxin and corticosteroids.
Pregnancy
Use with caution in pregnancy because Ban Xia is traditionally classified as a pregnancy-caution herb.
Breastfeeding
Use only under professional guidance.
Children
Used in children with reduced dose for poor appetite and congestion.
Before you use it
Recorded from the classical record and rewritten in this project's own words. Educational only: not a prescription.
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
Yi Xue Zheng Zhuan (医学正传, Orthodox Transmission of Medicine) by Yu Tuan, Ming dynasty, 1515.
Liu Jun Zi Tang developed from the four-herb Spleen tonic in the Ming dynasty, adding the two Phlegm herbs that address the Dampness a weak Spleen produces. It remains the standard formula for the combination of deficiency and Dampness.
Classical record
The Ming text records the six-herb formula for Spleen Qi deficiency with Phlegm-Dampness, tonifying the Spleen while transforming what it has failed to process.
Yi Xue Zheng Zhuan (医学正传, Orthodox Transmission of Medicine), Yu Tuan, Ming dynasty, 1515.
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
How is it different from Si Jun Zi Tang?
It adds Ban Xia and Chen Pi for Phlegm and Dampness. Si Jun Zi Tang alone treats plain Spleen Qi deficiency.
Can it help puffy skin?
Where the puffiness comes from Spleen deficiency with Dampness and there is a greasy tongue coat, yes, over weeks.
Who should avoid it?
People with dry or Yin-deficient patterns, because the drying herbs would worsen them.
How long is it used?
Two to eight weeks, then reassessed.