Bai Du San
Classical TCM Formula Profile
Part of the HJMEDICAL TCM Discovery Center
败毒散 · Bài Dú Sàn
A classical exterior-releasing formula (often with Ren Shen, as Ren Shen Bai Du San) for wind-cold-damp with underlying Qi deficiency, presenting with chills, fever, body aches and a floating soft pulse.
Read the complete guide →Quick Facts
- Formula Category
- Exterior-Releasing Formulas
- Primary Pattern
- Wind-Cold
- Primary Function
- Release exterior, dispel wind-damp, benefit Qi
- Primary Therapeutic Principle
- Disperse wind-cold-damp and support Qi while releasing the exterior
- Classical Source
- Tai Ping Hui Min He Ji Ju Fang / Xiao Er Yao Zheng Zhi Jue tradition
- Available as Granules
- Yes
Formula Overview
A classical exterior-releasing formula (often with Ren Shen, as Ren Shen Bai Du San) for wind-cold-damp with underlying Qi deficiency, presenting with chills, fever, body aches and a floating soft pulse.
Therapeutic Principle
Traditionally selected for exterior wind-cold-damp in a somewhat deficient patient — dispersing while lightly supporting Qi, rather than pure aggressive exterior release.
Composition: Sovereign, Minister, Assistant, Envoy
Every herb in the formula, grouped by the job it does in the classical hierarchy.
君SovereignTreats the main pattern
羌活Qiang Huo9g
Notopterygium Root- great for dispelling upper body wind-cold-dampness
獨活Du Huo9g
Pubescent Angelica Root- great for dispelling lower body wind-cold-dampness
臣MinisterReinforces the sovereign
川芎Chuan Xiong6g
Chuanxiong Rhizome- moves qi and bloods dispels wind
柴胡Chai Hu9g
Bupleurum Root- releases the flesh to vent pathogens moves qi
佐AssistantTreats accompanying patterns
桔梗Jie Geng6g
Platycodon Root- diffuses lung qi unblocks the diaphragm great to raise qi upwards
前胡Qian Hu9g
Peucedanum Root- resolves phlegm
茯苓Fu Ling9g
Poria / Hoelen- percolates dampness
人參Ren Shen6g
Ginseng Root- powerfully boosts yuan qi and fortifies the spleen and lung
Classical Composition
- Bupleuri Radix (Chai Hu) 30 liang (900g)
- Peucedani Radix (Qian Hu) 30 liang (900g)
- Chuanxiong Rhizoma (Chuan Xiong) 30 liang (900g)
- Aurantii Fructus (Zhi Qiao) 30 liang (900g)
- Notopterygii Rhizoma et Radix (Qiang Huo) 30 liang (900g)
- Angelicae Pubescentis Radix (Du Huo) 30 liang (900g)
- Poria (Fu Ling) 30 liang (900g)
- Platycodonis Radix (Jie Geng) 30 liang (900g)
- Ginseng Radix et Rhizoma (Ren Shen) 30 liang (900g)
- Glycyrrhizae Radix et Rhizoma (Gan Cao) 30 liang (900g)
Dosages follow the classical source and are shown for study, not as a prescription.
Related Conditions
Related Health Topics
Actions
- Dissipates cold
- removes dampness
- boosts qi
- and releases the exterior.
Indications
- Bai Du San is indicated for the pattern of externally contracted wind-cold-dampness.
- The symptoms are strong aversion to cold, high fever, headache, neck stiffness and pain, body soreness and pain, absence of sweating, stuffy nose, harsh voice, cough with phlegm, pi, and distressed chest and diaphragm.
- The tongue is pale with a white coating, and the pulse is superficial and forceless upon pressing.
Traditional Pathogenesis
Cause & mechanism
- This formula treats patterns of zheng qi deficiency with externally contracted wind-cold-dampness.
- The treatment should dissipate cold, remove dampness, and boost qi to release the exterior.
Clinical presentation
- Strong aversion to cold, stiff and painful head and neck, body aches, and an absence of sweat are signs of wind-cold-dampness attacking the surface of the flesh and lingering within the channels.
- The stuffy nose with a harsh voice, cough with phlegm, pi, and suppressed chest and diaphragm are symptoms of wind-cold invading the lung, blocking it, and causing the lung qi to fail to diffuse which further results in fluid accumulation transforming into phlegm.
- A white and greasy tongue coating, and a superficial pulse that is forceless with pressure are characteristic for deficient constitution contracted external wind-cold-dampness.
Treatment strategy
- The treatment principle is to disperse wind-cold-damp and support Qi while releasing the exterior.
How does this formula compare?
Clinical Perspective
Bai Du San releases exterior wind-cold-damp with mild Qi support. Jing Fang Bai Du San is a related wind-cold exterior formula. Shen Su Yin tonifies Qi and resolves phlegm for Qi-deficient colds. Jiu Wei Qiang Huo Tang strongly disperses wind-cold-damp without tonification.
Clinical Differentiation
- This is a commonly used formula to boost qi and release the exterior.
- This clinical pattern is marked by strong aversion to cold, high fever, body soreness and pain, absence of sweat, superficial pulse that is forceless with pressure.
Safety notes: Most of the medicinals in this formula are acrid, warm, aromatic, and dry. It is not applicable for yin-deficient patients with externally contracted pathogens, and is forbidden for dysentery caused by epidemic pestilence, damp-warmth, or intestinal accumulation of damp-heat.
For educational reference only, based on traditional pattern differentiation — not a substitute for professional advice.
Frequently Asked Questions
What are the actions of Bai Du San?
Bai Du San (Ren Shen Bai Du San) has the actions of tonifying Qi and releasing the exterior, dispersing Wind-Cold-Damp, and transforming Phlegm. It is specifically designed for exterior invasion in individuals who already have underlying Qi deficiency, allowing the upright Qi to expel the pathogen without further depletion.
Which modern diseases is Bai Du San suited to?
Modern TCM clinical practice commonly applies it to individuals whose pattern differentiation falls within Wind-Cold-Damp exterior invasion with Qi deficiency, including common cold or influenza in Qi-deficient, elderly, or chronically ill patients, upper respiratory infections with body aches and fatigue, early-stage dysentery with exterior signs, and certain Wind-Damp joint or muscle pain presentations with exterior features.
Is Bai Du San suitable for improving chills, fever, body aches, and fatigue in a weak constitution?
For presentations of strong aversion to cold, fever, headache, stiff neck, generalized body aches and heaviness, absence of sweating, nasal congestion, cough with phlegm, and marked fatigue — in those whose pattern differentiation confirms exterior Wind-Cold-Damp with underlying Qi deficiency — TCM commonly applies Bai Du San as an adjunct. It cannot replace standard medical treatment.
Related Products
Hoi Tin Ren Shen Bai Du San (Ginseng Powder to Overcome Pathogenic Influences) 5:1 Concentrated Granules
Nong's Ren Shen Bai Du San (Ginseng Powder to Overcome Pathogenic Influences) 5:1 Concentrated Granules
Related Articles
Bai Du San: Classic TCM Formula for Exterior Wind-Cold-Damp with Qi Deficiency
Jiu Wei Qiang Huo Tang: Classic TCM Formula for Exterior Wind-Cold-Damp with Interior Heat
Jing Fang Bai Du San: Classic TCM Formula for Exterior Wind-Cold-Damp with Stronger Release
Shen Su Yin: Classic TCM Formula for Exterior Wind-Cold with Qi Deficiency & Phlegm
Browse all classical formulas →
Medical Disclaimer
For general TCM education only — not medical advice. Consult a qualified TCM practitioner or licensed healthcare provider before use, especially if pregnant, nursing, on medication, or managing a chronic condition.