The US Multi-Society Task Force on Colorectal Cancer updated the 2014 consensus recommendations on colonoscopy preparation in 2025. For patients at low risk of inadequate preparation, key updates include simplifying dietary restrictions and using 2-L over 4-L regimens for improved tolerability while maintaining efficacy. Split-dose administration of bowel preparation is universally recommended. The guidelines emphasize same-day dosing as acceptable only for afternoon procedures, recommend oral simethicone as an adjunct for improved visualization, and establish preparation adequacy tracking as a quality metric.
Kawas et al. (Sun,) studied this question.