Painful Diarrhea Essential Formula is from “Danxi Xinfa”, which is composed of three taels of fried Atractylodes macrocephala, two taels of fried Paeonia lactiflora, two taels of fried Pericarpium Citri Reticulatae, one taels and five cents of fried Pericarpium Citri Reticulatae, and one taels of Fenghuang. Pain and Diarrhea Essential Formula is effective in strengthening the spleen and diarrhea of the liver (strengthening the spleen and diarrhea of the liver qi), relieving pain and stopping diarrhea. In this formula, Atractylodes macrocephala tonifies the spleen and dries dampness, and is used as the principal medicine; Paeonia lactiflora tonifies the blood, softens the liver and relieves urgent pain symptoms, and is used as the ministerial medicine in conjunction with the principal medicine. Chenpi regulates qi and dries dampness (regulating qi movement and drying dampness), harmonizes the spleen and stomach, and is used as an adjuvant; Fenghuang raises yang qi and dispels dampness, and is used as an adjuvant. Used together, these four herbs strengthen the spleen and benefit the qi (tonifying the spleen and replenishing qi), helping the spleen qi to transport and regulate qi, so that painful diarrhea can be cured. Painful Diarrhea Essential Formula can be used to treat painful diarrhea with weak spleen and strong liver, symptoms include abdominal pain and intestinal tinnitus, diarrhea with pain, reduction of pain after diarrhea, thin white fur on the tongue, and pulse that is not in tune with both sides of the barrier, and is slow or weak. The adverse effects of Painful Diarrhea Essential Formula have not been clarified, and it is contraindicated for those who are allergic to this drug, and this formula should be used under the supervision of a physician.