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Formula祛痰剂· 燥湿化痰

二陈汤

Èr Chén Tāng

Two-Cured Decoction

The foundational formula for drying dampness and transforming phlegm, composed of ban xia, chen pi, fu ling, and zhi gan cao. Named for ban xia and chen pi being superior when aged (chen), it established the template from which the majority of subsequent phlegm-transforming formulas were derived.

Source《太平惠民和剂局方》

Treatment Principle

燥湿化痰，理气和中

Dry dampness, transform phlegm, regulate qi and harmonize the middle

Composition · 组成

Herb	Role	Dosage	Notes
半夏Bàn Xià	君Sovereign	15g	燥湿化痰，降逆止呕，为君药
陈皮Chén Pí	臣Minister	15g	理气燥湿，与半夏相须为用
茯苓Fú Líng	佐Assistant	9g	健脾渗湿，使湿无所聚则痰无由生
甘草Gān Cǎo	使Courier	5g	调和诸药，润肺和中

Treats Patterns · 主治证型

痰湿证

Tán Shī Zhèng

Phlegm-Damp Pattern

Preparation · 煎服法

水煎服。原方加生姜七片、乌梅一枚同煎。

Editor-reviewed· 2026-04-08

PractitionerPatientDate

二陈汤Èr Chén Tāng

Two-Cured Decoction

Herb	Pinyin	Role	Dose
半夏	Bàn Xià	Jun (Sovereign)	15g
陈皮	Chén Pí	Chen (Minister)	15g
茯苓	Fú Líng	Zuo (Assistant)	9g
甘草	Gān Cǎo	Shi (Courier)	5g

Preparation: 水煎服。原方加生姜七片、乌梅一枚同煎。

This prescription is provided only by the dispensing TCM practitioner. Take as directed; do not modify the dose or share it. If you experience any adverse effect, stop immediately and contact your practitioner. The content of this platform is educational reference, not medical advice.
Bencao Dian · https://bencaodian.org · CC BY-SA 4.0

Permalink · CC BY-SA 4.0

Cite this entry

@misc{bencaodian-er-chen-tang,
  author       = {{Bencaodian Editorial}},
  title        = {Èr Chén Tāng 二陈汤 (Two-Cured Decoction)},
  year         = {2026},
  howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
  url          = {https://bencaodian.org/en/formulas/er-chen-tang},
  urldate      = {2026-04-17},
  note         = {CC BY-SA 4.0}
}

Permalink is fixed

Herb

Role

Dosage

Notes

半夏Bàn Xià

君Sovereign

15g

燥湿化痰，降逆止呕，为君药

陈皮Chén Pí

臣Minister

15g

理气燥湿，与半夏相须为用

健脾渗湿，使湿无所聚则痰无由生

调和诸药，润肺和中

Herb

Pinyin

Role

Dose

半夏

Bàn Xià

Jun (Sovereign)

15g

陈皮

Chén Pí

Chen (Minister)

15g

茯苓

Fú Líng

Zuo (Assistant)

甘草

Gān Cǎo

Shi (Courier)

@misc{bencaodian-er-chen-tang, author = {{Bencaodian Editorial}}, title = {Èr Chén Tāng 二陈汤 (Two-Cured Decoction)}, year = {2026}, howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine}, url = {https://bencaodian.org/en/formulas/er-chen-tang}, urldate = {2026-04-17}, note = {CC BY-SA 4.0} }