Keserol can act as a laxative and is mainly used for the treatment of constipation. The main ingredient of Keserol is glycerin, and the excipient is purified water. After application, it can stimulate the rectum, soften the feces, and then play the role of laxative, for a variety of causes of constipation has a better therapeutic effect. Keselu belongs to the external use of drugs, contraindications are not clear. But in the application of the drug should pay attention to, for the product allergy is prohibited, allergic people should be used with caution; should pay attention to the catheter opening smooth, to avoid bruising the anus or rectum; children must be in the adult supervision under the application. Although the safety of this drug is high, and there are basically no adverse reactions to external use. However, the cause of the patient’s defecation is complex, it is recommended to check the diagnosis, under the guidance of the doctor to apply, do not use the drug arbitrarily.