A traditional formula for cold lungs, wheezing, and watery phlegm
Expel Lung Cold (Xiao Qing Long Pian) supports the body when cold and phlegm settle in the lungs. Breathing may then feel heavy, tight, or restricted. Zhang Zhong-Jing first recorded it in Shang Han Lun ( Discussion of Cold-Induced Disorders ) during the Eastern Han Dynasty, 25-220 A.D. For centuries, practitioners have chosen it when cough, wheezing, chills, nasal congestion, and clear watery phlegm become hard to ignore.
When to use it
In Traditional Chinese Medicine, practitioners choose Expel Lung Cold when cold constrains the lungs and clear fluids begin to build up inside. Cough may develop. Wheezing may appear. Phlegm may stay thin, clear, and watery. The chest may feel tight or stifled. Some also notice chills, no sweating, nasal congestion, or a cold feeling in the chest or upper back.
Many choose this formula for cold-type cough, asthma with clear phlegm, bronchitis, rhinitis, sinus congestion, and other respiratory patterns where cold and fluid build-up appear together. It suits those who want support when the lungs feel blocked by cold, mucus, and heaviness rather than heat or dryness.
Why it stands out
What makes Expel Lung Cold so useful is its focused but balanced action. It does not simply suppress cough. It helps warm the lungs, release external cold, and reduce the fluid build-up that drives wheezing, congestion, and clear phlegm. This makes it a strong choice for natural support when cold and dampness settle in the respiratory system.
Research
Research on Expel Lung Cold has shown encouraging results in asthma, bronchitis, allergic rhinitis, and other cold-related lung patterns. Studies have reported improved lung function, less airway inflammation, reduced wheezing, and better outcomes when the formula was combined with standard inhaled treatment. Research has also explored its effects on immune regulation, histamine release, and allergic responses. This helps explain its continued relevance when cold, phlegm, and airway sensitivity appear together.
Important to know
Do not use Expel Lung Cold for heat patterns, sore throat with rapid pulse, dry cough from Yin deficiency, or phlegm-heat conditions. It is not intended for long-term use. Use caution in hypertension.