Polyethylene Glycol Electrolyte Bulk is available over the counter. Polyethylene glycol electrolyte bulk is used for the preparation of preoperative bowel cleansing, such as colorectal endoscopy, barium meal X-ray angiography or other examinations before bowel cleansing preparation. Common adverse reactions are gastrointestinal irritation, such as nausea, feeling of fullness, and in a few patients, vomiting, abdominal pain, and anal discomfort; individual patients may experience urticaria, esophageal perforation, cardiac arrest, and dyspnea. Contraindications mainly include intestinal obstruction, intestinal perforation, gastric retention, gastrointestinal bleeding, toxic enteritis and those who are allergic to the ingredients of this product. The need for medication needs to be used under the guidance of a professional doctor to avoid abusing the drug on your own.