Ping Wei San
Overview
Ping Wei San originates from the Song dynasty text Taiping Huimin Hejiju Fang and is a foundational formula for drying dampness, transporting and transforming the Spleen, promoting Qi movement, and harmonizing the Stomach.

Formula Composition
Ping Wei San commonly consists of Cang Zhu, Hou Po, Chen Pi, and Gan Cao; traditional use often includes Sheng Jiang and Da Zao.
Note: The specific formula proportions may vary among different sources and dosage forms; please follow the actual product instructions.
Traditional Actions and Indications
Traditionally used for manifestations of dampness obstructing the Spleen and Stomach, including abdominal distension, poor appetite, nausea, belching, a sticky sensation in the mouth, heavy sensation in the body, and loose stools. In modern practice, it is commonly used according to pattern differentiation in some cases of functional dyspepsia.
Precautions
- Persistent abdominal pain, black stools, vomiting blood, recurrent vomiting, or marked weight loss should receive prompt medical attention.
- People with manifestations suggestive of Yin deficiency and dryness-heat, such as dry mouth and throat, constipation, or a red tongue with scant fluids, should not use it independently for an extended period.
- Pregnant or breastfeeding women, children, older adults, and people with chronic illnesses are advised to consult a qualified professional before use.
- Different preparations should be used according to the package instructions.
