Zelan has the effects of activating blood circulation and regulating menstruation (regulating menstruation by activating blood circulation), inducing diuresis and eliminating swelling (clearing urine and eliminating edema), and removing blood stasis and eliminating carbuncles. Zelan is a traditional Chinese medicine with a bitter taste, warm nature, and belongs to the liver meridian. Clinically, it is mainly used for the treatment of dysmenorrhea, menstrual closure, menstrual irregularities, postpartum bruising and abdominal pain, sores, carbuncles, swollen toxins, edema, ascites, and other conditions. Zeran is mainly used as a decoction for internal use, but if it is used for canker sores and poisons, it can be applied externally to the affected area. The adverse reactions of Zelan are not yet clear, but patients who are allergic to this drug should be prohibited from using it. In addition, caution is needed in using this medicine for patients without the presence of stagnation. If you need to use the drug, please go to the hospital and use it under the guidance of the Chinese medicine practitioner’s diagnosis, do not blindly use the drug on your own, so as not to cause delay in the condition.