Yi Yi Ren Tang
Classical TCM Formula Profile
Part of the HJMEDICAL TCM Discovery Center
薏苡仁湯 · Yì Yǐ Rén Tāng
A classical formula for wind-damp bi with joint swelling, heaviness and restricted movement.
Read the complete guide →Quick Facts
- Formula Category
- Wind-Damp Dispelling Formulas
- Primary Pattern
- Dampness
- Primary Function
- Dispel wind-damp, resolve swelling, ease bi pain
- Primary Therapeutic Principle
- Drain damp and dispel wind for swollen bi syndrome
- Classical Source
- Classical TCM formulary
- Available as Granules
- Yes
Formula Overview
A classical formula for wind-damp bi with joint swelling, heaviness and restricted movement.
Therapeutic Principle
Traditionally selected for wind-damp bi with joint swelling and heaviness, rather than chronic deficient bi, channel blockage, or Qi-deficiency damp edema.
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
臣MinisterReinforces the sovereign
蒼朮Cang Zhu9g
Atractylodes Rhizome- dries dampness
- fortifies the spleen and dispels wind-damp
羌活Qiang Huo9g
Notopterygium Root- dispels upper-body wind-damp
獨活Du Huo9g
Pubescent Angelica Root- dispels lower-body wind-damp
佐AssistantTreats accompanying patterns
防風Fang Feng6g
Saposhnikovia Root- dispels wind
麻黃Ma Huang6g
Ephedra Herb- induces sweating
- diffuses the lung and calms wheezing
桂枝Gui Zhi6g
Cinnamon Twig- warms and unblocks the channels
當歸Dang Gui9g
Chinese Angelica Root- nourishes and gently invigorates blood
川芎Chuan Xiong6g
Chuanxiong Rhizome- moves blood and qi and reaches the head and channels
使EnvoyGuides and harmonises
Classical Composition
- Semen Coicis (Yi Yi Ren) 15g
- Rhizoma Atractylodis (Cang Zhu) 9g
- Rhizoma et Radix Notopterygii (Qiang Huo) 9g
- Radix Angelicae Pubescentis (Du Huo) 9g
- Radix Saposhnikoviae (Fang Feng) 6g
- Herba Ephedrae (Ma Huang) 6g
- Ramulus Cinnamomi (Gui Zhi) 6g
- Radix Angelicae Sinensis (Dang Gui) 9g
- Rhizoma Chuanxiong (Chuan Xiong) 6g
- Radix et Rhizoma Glycyrrhizae (Gan Cao) 3g
Dosages follow the classical source and are shown for study, not as a prescription.
Related Conditions
Related Health Topics
Actions
- Dispels wind-damp
- fortifies the spleen
- and unblocks the channels.
Indications
- This formula is indicated for wind-damp bi with spleen dampness.
- Signs and symptoms include swollen painful joints, heaviness of the body, and a greasy coating.
Tongue & pulseThe pulse is moderate or slippery.
Traditional Pathogenesis
Cause & mechanism
- This pattern is due to dampness obstructing the middle jiao or channels.
- Dampness is heavy and lingering; it impedes qi movement and produces fullness, heaviness, loose stools or edema.
Clinical presentation
- Wind-damp bi with spleen dampness produces swollen painful joints, heaviness and a greasy coating.
Treatment strategy
- The correct method is to leach out dampness, awaken the spleen, and move qi.
- In this formula the emphasis is to drain damp and dispel wind for swollen bi syndrome.
How does this formula compare?
Clinical Perspective
Yi Yi Ren Tang, Du Huo Ji Sheng Tang, Juan Bi Tang and Fang Ji Huang Qi Tang treat wind-damp bi. Du Huo Ji Sheng Tang tonifies for chronic deficient bi; Juan Bi Tang unblocks channels; Fang Ji Huang Qi Tang tonifies Qi while draining damp. Yi Yi Ren Tang dispels wind-damp and reduces swelling for bi with joint swelling and heaviness.
Clinical Differentiation
- Yi Yi Ren Tang is used for wind-damp bi with spleen dampness: swollen painful joints and heaviness.
- It is distinguished from Juan Bi Tang and Du Huo Ji Sheng Tang, and from Fang Ji Huang Qi Tang (qi-deficient wind edema).
Safety notes: This formula is bland and slightly cold. It is not appropriate for yang-deficiency cold-damp without heat.
For educational reference only, based on traditional pattern differentiation — not a substitute for professional advice.
Frequently Asked Questions
What are the actions of Yi Yi Ren Tang?
Yi Yi Ren Tang has the actions of dispelling Wind-Damp, warming the channels, leaching Dampness, and unblocking Bi. Yi Yi Ren is the chief herb because this formula treats painful obstruction in which Dampness — heaviness, swelling, and fixed ache — predominates.
Which modern diseases is Yi Yi Ren Tang suited to?
Modern TCM clinical practice commonly applies it to individuals whose pattern differentiation falls within Damp-predominant Wind-Cold-Damp Bi, including osteoarthritis or rheumatic joint pain with swelling and heaviness, stiffness worse in rainy weather, and numb heavy limbs of this pattern after medical causes have been assessed.
Is Yi Yi Ren Tang suitable for heavy, fixed joint pain that worsens in damp weather?
For presentations of aching joints that feel heavy or swollen, pain that stays in one place, possible numbness, worse in cold-damp weather, a white greasy coating, and a soggy or moderate pulse — in those whose pattern differentiation confirms Damp Bi — TCM commonly applies Yi Yi Ren Tang as an adjunct. Red-hot burning joints are the wrong pattern.
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Yi Yi Ren Tang: Classic TCM Formula for Wind-Damp Bi Syndrome, Swollen Joints & Heaviness
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Du Huo Ji Sheng Tang: Classic TCM Formula for Chronic Bi Syndrome, Lower Back & Knee Pain with Deficiency
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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.