Qian Hu, also known as Peucedani Radix or Peucedanum Root, is a bitter, slightly cold herb used in Traditional Chinese Medicine (TCM) to redirect Lung Qi downward, expel phlegm, and release exterior wind-heat. It is especially effective in treating coughs with thick phlegm and wheezing caused by Lung Qi obstruction or external wind invasion. Qian Hu is a commonly used herb in both acute respiratory infections and chronic cough with phlegm-heat.
Fonctions et avantages
Redirects Lung Qi Downward & Expels Phlegm
Qian Hu is often used for coughing and wheezing with thick, sticky phlegm, especially when the phlegm is difficult to expectorate. It helps descend rebellious Lung Qi and promotes expectoration, making it useful for bronchitis, asthma, and chest congestion.
Releases Exterior Wind-Heat
In the early stages of respiratory illness, Qian Hu is used to release wind-heat from the exterior. It treats symptoms such as cough, slight fever, and sore throat caused by external wind attacking the Lungs. It is typically used when there is no sweating or when heat signs are present.
Clears Heat & Resolves Phlegm-Heat in the Lungs
This herb is also used to treat phlegm-heat accumulation in the Lungs with symptoms such as yellow sputum, chest tightness, and restlessness. It helps clear internal heat while facilitating phlegm clearance.
Supports Lung Function in Cough Due to Heat or Wind
Whether from external wind or internal heat, Qian Hu supports the Lung’s descending function and relieves symptoms of obstruction, such as coughing, chest discomfort, or difficulty breathing.
Indications
Cough with thick yellow or sticky phlegm due to phlegm-heat in the Lungs
Wheezing or chest tightness from rebellious Lung Qi or phlegm accumulation
Cough with fever and sore throat in early-stage wind-heat colds
Restless coughing or bronchitis during seasonal transitions
Asthmatic breathing or difficulty expectorating mucus
Diagnostic de la langue et du pouls en MTC
Tongue: Red with yellow, greasy coating, indicating phlegm-heat or wind-heat invasion
Pulse: Slippery and rapid (phlegm-heat), or floating and rapid (wind-heat)
Common TCM Patterns Treated by Qian Hu
Qian Hu treats wind-heat invading the Lungs, phlegm-heat obstructing Lung Qi, and rebellious Lung Qi with cough or wheezing. These patterns involve symptoms such as productive cough, fever, tight chest, or sore throat.
Précautions et contre-indications
Contraindicated in cases of dry cough with Yin Deficiency or Lung dryness
Not suitable for cold-phlegm or Qi Deficiency without heat or wind
Avoid in cases of exterior cold without heat signs
Use with caution in weak patients prone to dryness or fluid depletion
Conclusion
Qian Hu is a reliable herb for descending Lung Qi, expelling phlegm, and treating cough and wheezing due to wind-heat or phlegm-heat. It is commonly used in both acute and chronic respiratory conditions where heat or external wind disrupts Lung function. Its cooling and descending nature make it an essential herb in modern formulas for cough, bronchitis, and asthma with phlegm.
