About This Herb*
Traditional Chinese Medicine background and properties
Herb Description*
Loquat leaf is a gentle, cooling herb best known for soothing coughs caused by Lung Heat. It works by directing rebellious Qi downward, which is why it also helps settle nausea and vomiting from Stomach Heat. It is a key ingredient in many popular cough syrups and respiratory formulas in Chinese medicine.
Herb Category*
Main Actions*
- Clears Lung Heat and Stops Cough
- Descends Qi and Transforms Phlegm
- Directs Rebellious Qi Downward and Stops Vomiting
- Clears Stomach Heat and stops vomiting
- Generates Fluids and Relieves Thirst
How These Actions Work*
'Clears Lung Heat and stops coughing' means Pi Pa Ye cools down excess Heat that has accumulated in the Lungs, which is the root cause of a hot, productive cough with yellow or sticky phlegm. Its bitter taste and cool nature make it naturally suited for this task. This is the herb's most well-known action and the reason it appears in many popular cough remedies.
'Transforms Phlegm and descends Qi' refers to the herb's ability to direct Lung Qi downward. In health, Lung Qi should descend. When Lung Qi rebels upward, the result is coughing, wheezing, and shortness of breath. Pi Pa Ye's bitter, descending nature helps restore this proper downward flow while also helping to thin and expel sticky Phlegm. As the Ben Cao Gang Mu noted, once Qi descends, Fire settles and Phlegm follows suit.
'Harmonizes the Stomach and stops vomiting' works on the same principle of directing Qi downward, but applied to the Stomach instead of the Lungs. The Stomach's natural direction is also downward. When Stomach Qi rebels upward, it causes nausea, vomiting, hiccups, and belching. Pi Pa Ye's cool, bitter nature clears Stomach Heat and restores the Stomach's normal descending function. It is often combined with Zhu Ru (Bamboo Shavings) and Lu Gen (Reed Rhizome) for this purpose.
'Relieves thirst' is a secondary action that stems from the herb's ability to clear Heat from the Stomach. When Stomach Heat burns up body fluids, it causes intense thirst and dry mouth. By clearing the Heat, Pi Pa Ye helps preserve and restore fluids, relieving thirst. This makes it useful in patterns of excessive thirst related to Heat.
Patterns Addressed*
In TCM, symptoms cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Pi Pa Ye 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 Pi Pa Ye addresses this pattern
Pi Pa Ye is bitter and slightly cool, entering the Lung channel directly. Its cool nature counters the pathological Heat lodged in the Lungs, while its bitter taste exerts a descending and drying action that redirects rebellious Lung Qi downward and helps resolve sticky, Heat-generated Phlegm. This dual mechanism of clearing Heat and descending Qi addresses the core pathology of Lung Heat, where Heat causes the Lung's normal descending function to reverse, producing coughing, wheezing, and yellow Phlegm.
A practitioner would look for one or more of these signs
Cough with yellow, sticky phlegm
Wheezing or shortness of breath
Dry mouth and throat
Why Pi Pa Ye addresses this pattern
Pi Pa Ye also enters the Stomach channel and is one of the key herbs for Stomach Heat with rebellious Qi. Its bitter, cool properties directly clear Heat from the Stomach and restore the Stomach's natural downward-directing function. The Stomach normally sends digested food and fluids downward. When Heat disrupts this, Qi reverses upward, causing nausea, vomiting, hiccups, and belching. Pi Pa Ye addresses both the Heat and the Qi rebellion simultaneously.
A practitioner would look for one or more of these signs
Nausea from Stomach Heat
Vomiting
Hiccups or belching
Thirst with dry mouth
Why Pi Pa Ye addresses this pattern
When warm-dryness injures the Lungs, the delicate Lung Yin and fluids are damaged, producing a dry, hacking cough with little or no Phlegm. Pi Pa Ye, especially in its honey-processed form, gently moistens and descends Lung Qi without being overly cold or drying. Its mild coolness clears residual Heat from the dryness while its descending nature soothes the irritated, rebellious Lung Qi. This is why it features in the classic formula Qing Zao Jiu Fei Tang (Dryness-Clearing Lung-Rescuing Decoction).
A practitioner would look for one or more of these signs
Dry cough with little or no phlegm
Dry throat and nose
Thirst and irritability
TCM Properties*
Slightly Cool
Bitter (苦 kǔ)
Leaf (叶 yè)
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.