About This Herb*
Traditional Chinese Medicine background and properties
Herb Description*
Mao Zhao Cao (Catclaw Buttercup Root) is a Chinese herb best known for breaking down lumps and nodules. It has been widely used for swollen lymph nodes, thyroid nodules, and as a supportive treatment for tuberculosis. Its name comes from the small, claw-shaped tuberous roots that resemble a cat's paw.
Herb Category*
Main Actions*
- Transforms Phlegm and Dissipates Nodules
- Resolves Toxicity and Reduces Swelling
- Disperses Accumulations and Dissipates Nodules
How These Actions Work*
'Resolves Phlegm and dissipates nodules' is the primary action of this herb. In TCM, when Phlegm (a thick, turbid pathological substance) congeals and lodges in a particular area, it can form lumps, masses, or swollen glands. Mao Zhao Cao's warm and pungent nature enables it to break through this congealed Phlegm and scatter the resulting nodules. This is why it has been used for centuries for scrofula (lymph node tuberculosis), thyroid swellings, and other Phlegm-type lumps. Its affinity for the Liver and Lung channels means it can address nodules along these pathways, particularly in the neck region where both channels traverse.
'Clears toxins and reduces swelling' refers to the herb's ability to counteract toxic accumulations and the swelling they produce. This action applies to boils, abscesses, venomous bites, and toxic sores where redness, pain, and pus are present. Despite being a warm herb, its sweet and pungent tastes combine to both detoxify and mobilize stagnation, helping the body push out accumulated toxins. This is also why it appears in modern clinical usage alongside other detoxifying herbs for treating certain tumors, where TCM views the underlying pathology as a form of toxic accumulation combined with Phlegm stagnation.
Patterns Addressed*
In TCM, symptoms cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Mao Zhao Cao is traditionally associated with these specific patterns.
The following describes this herb's classification within Traditional Chinese Medicine theory and is provided for educational purposes only.
Why Mao Zhao Cao addresses this pattern
When Phlegm and Heat combine and stagnate in the channels, they can form hard, painful nodules or masses, particularly along the neck and throat where the Liver and Lung channels pass. Mao Zhao Cao enters both of these channels and uses its pungent taste to disperse congealed Phlegm while its warm nature mobilizes stagnation. Its detoxifying action helps clear the Heat component of this pattern. This makes it a primary herb for scrofula (lymph node tuberculosis) and similar Phlegm-Fire accumulations that manifest as firm, swollen glands.
A practitioner would look for one or more of these signs
Hard, swollen lymph nodes in the neck
Thyroid enlargement or nodules
Persistent low-grade fever with fatigue
Why Mao Zhao Cao addresses this pattern
When Phlegm congeals and forms subcutaneous lumps that are firm yet movable and generally not painful, this represents the Phlegm Nodule pattern. Mao Zhao Cao's core action of resolving Phlegm and dissipating nodules directly targets this pathomechanism. Its warm nature and pungent taste work to break up the sticky, congealed Phlegm that has solidified into these masses. Because it enters the Liver channel, it is especially useful when Qi stagnation contributes to Phlegm accumulation, as the Liver governs the free flow of Qi.
A practitioner would look for one or more of these signs
Thyroid nodules that are firm but not acutely painful
Breast lumps that are firm and movable
Lung nodules found on imaging
Why Mao Zhao Cao addresses this pattern
When Heat toxins accumulate in the flesh, they produce red, swollen, and painful lesions such as boils, abscesses, and carbuncles. Mao Zhao Cao's detoxifying and swelling-reducing action helps clear these toxins and resolve the inflammation. While it is warm in nature, it is not strongly heating, and its toxin-clearing properties allow it to address acute toxic swellings. This is also why folk traditions use it externally as a poultice for sores and snakebites.
A practitioner would look for one or more of these signs
Red, painful boils or abscesses
Swelling from venomous bites
Pus-filled skin lesions
TCM Properties*
Warm
Sweet (甘 gān), Acrid / Pungent (辛 xīn)
Tuber (块茎 kuài jīng / 块根 kuài gēn)
This is partial information on the herb's TCM properties. More detailed information is available on the herb'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.