Chen Pi is a Chinese herbal medicine, which is the peel of an orange. It is made by peeling oranges and drying them in the sun or at low temperature. Chen Pi has a wide range of applications in Chinese medicine, and its common effects are to regulate qi, strengthen the spleen, and dry dampness and resolve phlegm. Chen Pi can be applied clinically to treat a number of diseases such as nausea, vomiting, diarrhea and bloating. Chen Pi can also treat food deposition, such as with Hawthorn and Shen Qu to treat stool obstruction and stomach distension caused by eating too much. Chen Pi can also be used with Citrus aurantium and ginger, together to treat coronary heart disease. Chen Pi is an herbal medicine and the dosage is less than to be 10 grams at a time.