Er Chen Tang
Overview
Er Chen Tang originated from the Song dynasty’s Taiping Huimin Heji Ju Fang and is a foundational formula for drying dampness, transforming phlegm, regulating Qi, and harmonizing the middle.

Formula Composition
Common ingredients include pinellia, aged tangerine peel, poria, and honey-fried licorice, often combined with fresh ginger and mume fruit.
Note: The specific proportions may vary among different sources and dosage forms; please follow the instructions for the actual product.
Traditional Actions and Indications
Traditionally used for manifestations of phlegm-dampness accumulation, such as coughing with copious phlegm, relatively thin and white phlegm, chest oppression, nausea, poor appetite, or dizziness. In modern applications, it is often used as a foundational formula for cough and digestive discomfort associated with the phlegm-dampness pattern.
Precautions
- Seek medical attention promptly in cases of high fever, yellow purulent phlegm, coughing up blood, shortness of breath, or chest pain.
- People with dry cough, scant phlegm, marked dryness of the mouth and throat, or other manifestations of dryness should not use it on their own for an extended period.
- Pregnant women, breastfeeding women, children, older adults, and people with chronic diseases are advised to consult a qualified professional before use.
- The processing and dosage of pinellia in different products should follow the product instructions.
