About This Formula*
Traditional Chinese Medicine background and properties
Formula Description*
A classical formula for clearing heat and infection from the lungs, used when there is cough with thick yellow or foul-smelling phlegm, chest pain, and low-grade fever. It works by cooling lung inflammation, breaking up phlegm, promoting drainage of pus, and moving stagnant blood. It is especially associated with lung abscess (a deep lung infection) but is also used broadly for respiratory conditions involving heat and congested phlegm.
Formula Category*
Main Actions*
- Clears Lung Heat
- Resolves Phlegm
- Invigorates Blood and Dispels Stasis
- Expels Pus
TCM Patterns*
In TCM, symptoms don't appear randomly — they cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Wei Jing Tang is traditionally associated with these specific patterns.
The following describes this formula's classification within Traditional Chinese Medicine theory and is provided for educational purposes only.
Why Wei Jing Tang addresses this pattern
When heat toxins accumulate in the Lungs and combine with phlegm and blood stasis, the result is a condition the classical texts call lung abscess (肺痈). Heat congests the Lungs, impairing their descending and purifying function, leading to cough with thick, yellow, or foul-smelling sputum. The heat also damages blood vessels, causing blood stasis that further blocks circulation in the chest. If this persists, tissue breaks down and pus forms. Wei Jing Tang addresses every aspect of this pathomechanism: Lu Gen clears the heat, Dong Gua Zi and Yi Yi Ren transform phlegm and drain pus, and Tao Ren breaks up blood stasis. The formula is notable for its gentle, non-harsh approach, using sweet, cool, and bland herbs rather than intensely bitter or cold ones, which makes it suitable for a condition lodged in the delicate upper body.
A practitioner would look for one or more of these signs
Cough with copious yellow or foul-smelling phlegm, possibly containing pus or blood
Dull or hidden pain in the chest, worsened by coughing
Mild, persistent fever
Thick yellow or greenish sputum with a foul, fishy odour
Red tongue with yellow, greasy coating
Dry mouth and throat
Why Wei Jing Tang addresses this pattern
In the context of lung abscess, heat that has been simmering in the Lungs damages the lung's blood vessels, causing blood to stagnate. This stagnant blood combines with phlegm to form a stubborn obstruction. The classical Jin Gui Yao Lue description mentions 'scaly skin on the chest' (胸中甲错), which is a hallmark sign of internal blood stasis. Wei Jing Tang addresses this with Tao Ren, which invigorates the blood and breaks up stasis, while Yi Yi Ren and Dong Gua Zi help clear the obstructing phlegm. By resolving both the phlegm and the blood stasis simultaneously, the formula dismantles the pathological complex that sustains the abscess.
A practitioner would look for one or more of these signs
Fixed chest pain, worse with coughing
Coughing up blood-streaked or purulent sputum
Scaly, rough skin on the chest (甲错)
How It Addresses the Root Cause*
Wei Jing Tang addresses a condition called fei yong (肺痈, lung abscess) in TCM, where toxic Heat invades the Lungs and becomes trapped together with Phlegm and Blood stasis. The classical teaching from the Nei Jing states: "When Heat is extreme, flesh decays; when flesh decays, pus forms." This captures the core disease logic.
The process begins when Heat toxin lodges in the Lungs and impairs their natural descending and purifying function. The Lungs lose their ability to disperse and clear, so fluids stagnate and thicken into Phlegm. At the same time, Heat scorches the Blood vessels of the Lungs, causing Blood to congeal and stagnate. Phlegm and stagnant Blood then bind together, obstructing the lung tissue. Over time, this stagnation festers: the tissue breaks down and transforms into pus and foul-smelling discharge. The patient coughs up thick, yellow, foul-smelling sputum (or even pus and blood), feels dull chest pain, and has a low-grade fever. The tongue is red with a yellow, greasy coating, and the pulse is slippery and rapid — all hallmarks of Phlegm-Heat congestion in the interior.
The formula works because it targets all three interlocking pathological factors simultaneously: it clears Heat from the Lungs, transforms and expels the accumulated Phlegm, and moves Blood stasis to break up the abscess. By addressing the Heat, Phlegm, and stasis together, the formula helps restore the Lungs' descending and purifying function, allowing the pus to be expelled and the tissue to heal.
Formula Properties*
Cool
Predominantly sweet and bland with mild bitterness — sweet and bland to gently clear Heat, drain Dampness, and promote the discharge of pus without being harsh or drying.
Formula Origin
This is just partial information on the formula's TCM properties. More detailed information is available on the formula's dedicated page
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
