A randomised controlled blinded trial to investigate the effect of hyoscine butylbromide during colonoscopy on rates of polyp detection.

Interventions: During the isolated procedure of a single colonoscopy using the standard equipment, monitoring and sedation; the intervention (a single dose of hyoscine butylbromide 20 mg intravenously over approximately 10 seconds, also commercially known as buscopan) will be administered upon intubation of the caecum.
Primary outcome(s): Number of colonic polyps detected by inspection of the bowel via a fibreoptic colonoscope in patients with polyps detected at the isolated single procedure of colonoscopy.[At the time of colonoscopy.]
Study Design: Purpose: Diagnosis; Allocation: Randomised controlled trial; Masking: Open (masking not used);Assignment: Parallel;Type of endpoint: Efficacy