What is the role and efficacy of Chen Pi

Pericarpium Citri Reticulatae can be used for epigastric (stomach and abdomen) distension and fullness, chest paralysis (tightness and pain in the chest), coughing with excessive phlegm, etc. It has the effect of resolving phlegm and drying dampness, regulating qi and strengthening the spleen.
Chenpi can be used as both food and herbal medicine. When this product is used as herbal medicine, it belongs to the spleen and lung meridians, has a bitter, pungent flavor and warm nature, and can be used for vomiting and eructation (hiccups). If the vomiting is a mixture of deficiency and solidity with heat, it can be combined with Zhu Ru, ginseng and jujube.
This medicine can also be used for the distention and fullness of the epigastric region with dampness obstruction in the spleen and stomach and stagnation of qi, and vomiting and diarrhea with little food, and it is most suitable for those who have cold-dampness obstruction in the middle jiao.
It should be noted that the warmth of this medicine can help heat, so it should be used with caution for those with red tongue and little fluid, and those with solid internal heat. Please do not use the drug by yourself, under the guidance of a doctor.