How long it takes to have a bowel movement after drinking Compound Polyethylene Glycol Electrolytes varies from person to person, usually 1-3 hours to have a bowel movement, depending on the individual’s metabolism, sensitivity of the drug, and the dosage taken. Compound polyethylene glycol electrolyte is commonly used in clinical bowel preparation drugs, such as colonoscopy and other tests before the bowel cleansing preparations, to be taken in accordance with the dose given by the doctor, usually 12-24 bags, divided into two doses, after taking the drug about 1-3 hours to start defecation, gradually the entire intestinal tract will be emptied, for the poor sensitivity of the drug or a history of constipation, the time may be prolonged. For the treatment of constipation patients, the conventional dose of 1 bag each time, 2 times a day, strong sensitivity can be 1-3 hours after the appearance of defecation, but some of the individual metabolism is relatively poor or poor sensitivity to the drug patients, after taking the drug for several hours do not defecate, there are obvious individual differences, so the time of defecation can not be determined, if necessary, need to be guided by the doctor to replace other excretory drugs. Compound polyethylene glycol electrolyte defecation, the use and dosage of different, different starting time, specific need to standardize the use of medication under the guidance of a doctor, can not be arbitrarily used on their own, after taking the drug, if there are serious adverse reactions, such as abdominal pain, nausea, vomiting and so on, need to consult a doctor in a timely manner.