4-Liter Split-Dose Polyethylene Glycol Is Superior to Other Bowel Preparations, Based on Systematic Review and Meta-analysis

A meta-analysis showed that 4-L split-dose PEG is better than other bowel preparation methods for colonoscopy. Significant heterogeneity among studies might result from differences in patient demographics and protocols. A 4-L split dose of PEG should be considered the standard with which new bowel preparation methods are compared.