Is the gastrointestinal endoscopy preparation solution composed of compound polyethylene glycol electrolyte powder and simethicone powder?

Jun 06, 2025 Source: Cainiu Health

Dr. Shen Yonghua

Introduction

Before undergoing gastrointestinal endoscopy, it is usually necessary to take certain medications to cleanse the intestines. Compound polyethylene glycol electrolyte powder is a commonly used bowel cleanser that helps clear intestinal contents, allowing for clear visualization of the intestinal interior during the examination. Simethicone powder eliminates foam in the gastrointestinal tract and improves the clarity of gastroscopy and radiographic examinations.

Generally, patients undergoing gastrointestinal endoscopy are required to take compound polyethylene glycol electrolyte powder and simethicone powder. Detailed explanations are as follows:

Gastrointestinal endoscopy is a commonly used endoscopic examination method for observing and evaluating the internal conditions of both the upper digestive tract, including the esophagus, stomach, and duodenum, and the lower digestive tract, including the colon and rectum. It helps physicians diagnose and assess various gastrointestinal diseases.

Prior to undergoing gastrointestinal endoscopy, patients usually need to take certain medications to cleanse the intestines. Compound polyethylene glycol electrolyte powder is a commonly used intestinal cleanser that promotes intestinal motility by increasing intestinal moisture, helping to clear intestinal contents for clearer visualization of the intestinal interior during the examination. Simethicone powder can alter the surface tension of gas bubbles, causing them to rupture, thus facilitating gas expulsion and eliminating foam in the gastrointestinal tract, improving clarity during gastroscopy and radiographic examinations.

The usual method of using compound polyethylene glycol electrolyte powder is to take it 4-6 hours before the endoscopic examination, consuming a certain amount of solution until clear watery stools are passed. For simethicone powder, during gastroscopy, 30-50 ml of a 0.5%-1.0% aqueous suspension should be taken orally or administered before the application of local anesthetic spray, with the examination completed within half an hour. If mucus remains present during the endoscopic examination, simethicone powder may be injected through the endoscope channel.

In daily life, medication should be taken according to medical guidance. If severe adverse reactions occur, medical attention should be sought promptly. Additionally, dietary adjustments are necessary, typically involving a period of low-fiber or liquid diet and fasting for a certain period before the examination.

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Can I eat jiangxiangbing (a type of savory sauce pancake) before a gastroenterology endoscopy?

Gastrointestinal endoscopy refers to the examination of the gastrointestinal tract. Generally, if more than 8 hours have passed since the endoscopy, eating is usually allowed. However, if less than 8 hours have passed, eating is typically not recommended to avoid affecting the test results. It's advisable to consult a healthcare professional before resuming food intake. Prior to undergoing a gastrointestinal endoscopy, it's recommended to consume light and easily digestible foods such as millet porridge or pumpkin porridge, and to avoid spicy, greasy, or other irritating foods.

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How long after a gastroscopy and colonoscopy can you eat fruit?

During gastrointestinal endoscopy, the mucosa of the digestive tract may experience some degree of irritation or injury; therefore, a recovery period is needed after the procedure. Generally, if there are no discomfort symptoms such as abdominal pain or bloating six hours after the examination, patients may begin to try eating some fruits. However, the fruits should be easily digestible and non-irritating varieties.

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Can I drink milk tea the day before having a gastroscopy?

Generally, you should not drink milk tea the day before undergoing a gastrointestinal endoscopy, as it may affect the examination results and increase the burden on the gastrointestinal tract. If you experience any discomfort after the procedure, it is recommended to seek medical attention promptly. Milk tea contains various ingredients such as creamer, sugar, and additives, which are not easily digested and absorbed by the gastrointestinal system.