Senna can be decocted under the guidance of a doctor under the guidance of a doctor, there is no such thing as the best way to drink. Senna is sweet, bitter, cold in nature, belongs to the large intestine meridian, has the effect of diarrhea and laxative (using drugs with diarrhea to pass stools), clinically used in the treatment of constipation, abdominal pain caused by heat stagnation, can also be used for the treatment of edema and bloating. Nausea, vomiting, abdominal pain and other adverse reactions may occur. Attention to allergy to this product is prohibited, allergic people should be cautious, the frail and pregnant women should not take, chronic enteritis, diarrhea, glaucoma patients should not be served, slippery semen, impotence should not be served for a long time, more than one, low blood pressure patients should not be taken in large quantities over a long period of time. Senna taking method for boiling water or after the next decoction, can be used with other drugs, such as dyspepsia, constipation, abdominal distension, chest tightness, etc. can be used with raw rhubarb, orange peel, Huanglian, cloves and so on. It is recommended that patients who need it take it under the guidance of a doctor, do not take medication without authorization.