Taking senna usually have to pull a few times can not be determined, depending on the person, should be used in accordance with medical advice. Senna is a kind of bitter and cold Chinese herbal medicine, belonging to the large intestine meridian. It has the effect of laxative, diarrhea, heat and stagnation, and diuresis. It is used for heat stagnation, edema and distension, constipation and abdominal pain. After taking senna generally relieve stool a few times can not be determined, due to different doses, different personal constitution, different sensitivity to drugs, whether diarrhea, or diarrhea a few times after taking the drug varies from person to person. Pregnant women, menstruation, breastfeeding, cold diarrhea (diarrhea caused by cold attack on the spleen and stomach), the frail people are prohibited to take Senna, excessive dosage can cause abdominal pain, nausea, vomiting. This product should be used reasonably under the guidance of a doctor’s diagnosis to avoid aggravating the condition.