If the laxative is not consumed and the bowel movement is complete, no further medication is needed. If the bowel movement is only once to a clear watery stool, the remaining laxative should still be taken, as prescribed by the doctor. In the colonoscopy / treatment or abdominal CT and other tests before the need for intestinal preparation, that is, the contents of the intestinal tract to be excreted clean, usually choose to slow diarrhea class of drugs to promote excretion, clinically commonly used laxatives are compounded polyethylene glycol electrolyte dispersion, lactulose, etc., generally comply with the doctor’s instructions to use the medication, the majority of people after more than 10 times can be excreted after the excretion of clean. Some people may eat less in the early stage, fast intestinal peristalsis and other reasons lead to the use of drugs during the soon to be excreted, if the subsequent many watery stools, you can no longer continue to use the drug; if there is only a clear watery stools, the subsequent may also appear with the contents of the feces, then you should continue to use the drug until many times to excrete clear watery stools. Specific medication should be administered under the guidance of a specialist and should not be used without authorization.