A low-residue diet before colonoscopy tends to improve tolerability by patients with no differences in preparation quality: a randomized trial.

Background: The pre-colonoscopy diet traditionally involves 24 h of a clear liquid diet (CLD) in combination with a lavage solution; however, this preparation is poorly tolerated.

Aim: To compare the impact on the quality of bowel cleansing and tolerability of a CLD versus a low-residue diet (LRD).

Methods: We performed a randomized trial.