Dang Gui Di Huang Yin

What Dang Gui Di Huang Yin is for

This drink is for dry, itchy skin on a depleted constitution, sometimes with small vesicles, where the Blood and Yin that keep the skin moist have run low and the Kidney no longer supports them. It rebuilds both, gently, so the surface can hold moisture and the itch settles over weeks.

The skin looks undernourished: dry, thin and itchy, sometimes with tiny vesicles that come up where the dryness is worst. The itch is persistent and often worse when the person is worn down or the weather is dry, and scratching leaves the surface rough rather than producing much eruption. The complexion is pale or dull, the tissue feels slack, and there is a general impression of a surface that has been running on too little for too long.

Blood and Yin are what moisten and settle the skin. When they are low the surface dries, and the dryness itself provokes the itch. Shu Di Huang and Dang Gui nourish Blood and Yin, Shan Zhu Yu and Shan Yao secure the Essence so the reserve holds, Du Zhong and Niu Xi strengthen the lower back where the Kidney weakness shows, and Gan Cao harmonises. The formula is nourishing and gently warming, which is why it is given over weeks rather than days.

It is not for Damp-Heat, where the skin is red, weeping or greasy, and it is not for an acute erupting rash. Its place is the quiet, chronic dryness of a depleted person whose skin has lost its moisture and whose constitution no longer rebuilds it quickly. Because Blood and Yin rebuild slowly, the course is long, and progress is measured in texture and itch rather than in a rapid change of appearance.

Actions

• Nourishes Blood and Yin
• Strengthens the Liver and Kidney
• Moistens dryness
• Supports the lower back and skin

Properties

• Taste and temperature: Predominantly sweet with a sour note. Sweet nourishes Blood and Yin, sour secures the Essence.
• Organs: Liver, Kidney, Heart
• Channels: Liver, Kidney

The pattern behind it

The pattern is Liver and Kidney deficiency with Blood and Yin depletion. The Blood cannot nourish the skin so it dries and itches, and the Kidney weakness shows in the lower back. The formula supplies both, which is why it is used for the dry itchy skin of depletion rather than for acute rashes.

Composition

The herbs in Dang Gui Di Huang Yin, with their role and dose.

Patterns it treats

How the formula is built

Two herbs nourish Blood and Yin, two secure and support the Essence, two strengthen the lower body, and one harmonises. It is a balanced Kidney and Blood tonic, gentle enough for weeks and aimed at the dry depleted skin rather than at an active eruption.

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.

Modifications

• If the dryness is marked, moistening herbs are added.
• If Heat signs appear, cooling herbs are added.
• If the lower back weakness dominates, the Kidney herbs are increased.
• If Dampness appears, the formula is stopped.

Timing

Taken warm in two divided doses.

Duration

Two to four weeks as an initial course, then reassessed, and longer as a tonic under guidance.

Diet while taking it

Nourishing cooked food; avoid cold raw and greasy food.

Safety

Interactions

Gan Cao may interact with diuretics, digoxin and corticosteroids.

Pregnancy

Use with caution in pregnancy because Niu Xi has Blood-moving and downward-directing properties.

Breastfeeding

Use only under professional guidance.

Children

Used only with professional supervision.

Before you use it

Recorded from the classical record and rewritten in this project's own words. Educational only: not a prescription, and persistent itchy rashes need medical assessment to confirm the diagnosis.

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

Jing Yue Quan Shu (景岳全书, The Complete Works of Jingyue) by Zhang Jingyue, Ming dynasty, 17th century.

The formula appears in Zhang Jingyue's 17th century collection, where he emphasised nourishing the Yin and Blood while supporting the Kidney. That approach is why it suits the dry, depleted skin picture with lower back weakness rather than the acute eruption.

Classical record

Related formulas

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.