Excessive use of senna can be harmful to the body as it may cause abdominal pain, nausea and diarrhea. Therefore, it should be used correctly according to medical advice. Senna is a bitter taste, cold nature of the Chinese herbal medicine, with diarrhea heat stagnation, diuresis, laxative effect. It is used for constipation and abdominal pain, heat knot stagnation, edema and fullness. For heat constipation, it can be used with Citrus aurantium, thick Park and other diarrhea to remove fullness, for edema and fullness, it can be used with Dabu Pi diarrhea to move water. Adverse effects of this product is not clear, pregnant women, lactation, deficiency, menstruation, cold diarrhea (diarrhea caused by wind-cold or diarrhea caused by cold spleen and stomach) prohibit the use of senna. The use of senna leaves for the treatment of disease, need to be under the guidance of a traditional Chinese medicine practitioner to identify the use of medication, in order to avoid causing adverse effects.