Efficacy, Safety and Tolerability of Magnesium Sulfate With Low-volume Polyethylene Glycol for Colonoscopy Cleansing

Exclusion Criteria

• •Subjects with therapeutic colonoscopy for colorectal polyps
• •Subjects with confirmed or suspected gastrointestinal obstruction, gastric retention, gastroparesis, gastric emptying disorder, or acute gastrointestinal bleeding
• •Subjects with confirmed or suspected colorectal cancer, inflammatory bowel disease, toxic colitis, or toxic megacolon
• •Subjects with renal or liver dysfunction, congestive heart failure or rhabdomyolysis
• •Subjects with ascites, suspected electrolyte abnormalities, or uncorrected dehydration
• •Subjects with constipation (\<3 times a week, difficult defecation, dry stool, less amount)
• •Subjects with serious cardiac and cerebrovascular diseases,suffering from metabolic disease or endocrine disease
• •Subjects who had previously undergone colorectal resection
• •Women with positive pregnancy tests or pregnancy plans, and women in lactation or allergic to the investigational drugs and their ingredients
• •Subjects who are participating in other clinical trials or receiving special drugs
• •Subjects with any other conditions that the investigator considered inappropriate for inclusion