1, Erchen decoction is the most basic traditional Chinese medicine prescription for invigorating qi and spleen, resolving phlegm and promoting diuresis. Many traditional Chinese medicine prescriptions for invigorating spleen, resolving phlegm and promoting diuresis are modified from Erchen decoction, such as Wendan decoction, Huanglian Wendan decoction, Qiwei Baizhu decoction and so on.

2. Erchen Decoction consists of dried tangerine peel, Pinellia tuber, Poria cocos and Glycyrrhiza uralensis Fisch. The dried tangerine peel can tonify spleen and regulate middle warmer, while Glycyrrhiza uralensis Fisch can tonify qi, tonify middle warmer and tonify deficiency, and detoxify. Pinellia tuber can eliminate dampness and phlegm, reduce adverse flow and stop vomiting, eliminate mass, and relieve swelling and pain. Poria can tonify spleen, eliminate dampness and soothe the nerves. The four drugs are compatible to play the roles of invigorating spleen, invigorating qi and regulating middle warmer.

3. If you don't sleep well, you can add Fructus Aurantii Immaturus and bamboo shavings to warm your gallbladder, which becomes a soup for warming your gallbladder. In addition, Huanglian becomes Huanglian Wendan Decoction, which can regulate autonomic nervous dysfunction or sleep disorder, etc. Erchen Decoction can be used to add and subtract according to different constitutions.