Fig. 3From: Efficacy of macrogol 4000 plus electrolytes in bowel preparation for colonoscopy in patients with chronic constipationTolerability of polyethylene glycol (PEG) and macrogol 4000. a Extremely unpleasant to take, never want to take it again; b unpleasant to take, but would take again for colonoscopy; c slightly unpleasant to take, but within the limits of tolerability; d easy to take; proportion of (c) and (d) defined as good tolerabilityBack to article page