Wu Wei Xiao Du Yin — Five-Ingredient Decoction to Eliminate Toxin

On this page

1. Overview
2. TCM pattern
3. Key herbs
4. Formula actions
5. Conditions treated
6. Comparisons with related formulas
7. Modifications
8. Cautions

Overview

Wu Wei Xiao Du Yin — the “Five-Ingredient Decoction to Eliminate Toxin” — is a Qing-dynasty formula from Yi Zong Jin Jian (Golden Mirror of Medicine, 1742) and is the most widely used classical formula for acute Fire-toxin presentations of the skin — boils, abscesses, cellulitis, severe acne, infected insect bites and other localised infections with redness, heat and swelling.

The formula combines five powerful Heat-clearing, toxin-relieving herbs: Jin Yin Hua (honeysuckle), Pu Gong Ying (dandelion), Zi Hua Di Ding (Viola), Ye Ju Hua (wild chrysanthemum) and Zi Bei Tian Kui (purple-back violet). Each has been shown in modern research to have substantial antibacterial activity, particularly against skin pathogens.

Wu Wei Xiao Du Yin is used both internally and as a wash for affected skin. It is one of the most clinically reliable formulas in the materia medica for skin infection.

I prescribe Wu Wei Xiao Du Yin as part of bespoke herbal formulas from pharmaceutical-grade granules sourced from Sun Ten in Taiwan.

TCM pattern

Wu Wei Xiao Du Yin is prescribed for Fire toxin invading the skin:

• Boils, abscesses or carbuncles — red, hot, swollen, painful
• Acute severe acne with painful pustules and nodules
• Cellulitis early stage
• Infected insect bites
• Erysipelas (acute streptococcal skin infection)
• Mild fever
• Local heat and tenderness
• Thirst, irritability
• Constipation
• Tongue — red, yellow coat
• Pulse — rapid, possibly slippery or forceful

Key herbs

1. Jin Yin Hua (Lonicera japonica honeysuckle flower) — clears Heat and resolves Fire toxin
2. Pu Gong Ying (dandelion, Taraxacum mongolicum) — clears Fire toxin; particularly for breast and skin toxin
3. Zi Hua Di Ding (Viola yedoensis) — clears Fire toxin; specifically for skin sores
4. Ye Ju Hua (wild chrysanthemum) — clears Heat and Fire toxin
5. Zi Bei Tian Kui (Begonia fimbristipula) — clears Fire toxin

Formula actions

1. Clears Heat
2. Resolves Fire toxin
3. Cools Blood
4. Disperses local swelling and infection

Conditions treated

1. Boils, furuncles, carbuncles
2. Acute severe acne — particularly cystic acne — see acne
3. Cellulitis (alongside antibiotics)
4. Infected sebaceous cysts
5. Folliculitis
6. Hidradenitis suppurativa acute flare
7. Erysipelas
8. Acute mastitis with breast infection
9. Acute lymphadenitis
10. Severely infected insect bites and stings
11. Acute conjunctivitis (alongside topical care)
12. Erysipelas of the face from sinusitis

Comparisons with related formulas

• Xian Fang Huo Ming Yin — for early-stage Fire-toxin abscesses; classical formula contains pangolin scales (CITES-protected); we do not use this formula.
• Huang Lian Jie Du Tang — for systemic Fire-toxin with high fever; more inwardly focused.
• Pu Ji Xiao Du Yin — for Wind-Heat toxin in the head and face (epidemic mumps, erysipelas of the face).
• Wu Mei Wan — unrelated; mentioned only because of name similarity.

Modifications

• For severe Fire-toxin with high fever, add Huang Lian and Da Huang
• For Blood-toxin signs (purple/dark lesions), add Sheng Di and Mu Dan Pi
• For chronic recurrent acne, combine with Bai Hua She She Cao
• For cellulitis with marked swelling, add Chi Shao and Mu Dan Pi
• For breast inflammation/mastitis, add Lu Lu Tong and Wang Bu Liu Xing
• For chronic furunculosis, alternate with Yu Ping Feng San

Cautions

Cellulitis, abscess and serious skin infection need medical assessment and often antibiotics. Chinese herbs are an adjunct to conventional care, particularly important if there is fever, spreading redness, lymph node swelling or systemic symptoms.

Sepsis is a medical emergency — call 999 if a skin infection is accompanied by high fever, confusion, racing heart, breathlessness or rapidly spreading symptoms.

Not appropriate for cold-pattern slow-healing wounds, Yang-deficient cold ulcers or chronic indolent presentations.

Generally safe in pregnancy under qualified supervision.

Always consult a qualified Chinese herbalist registered with the RCHM.

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