This is a quality improvement study to determine the impact of an automated telephone reminder on the quality of bowel preparation in patients undergoing outpatient colonoscopy.

Randomized trial of automated reminders with bowel prep instructions and encouraging clear fluid ingestion. The phone calls will occur 48-96 hours prior to the scheduled colonoscopy.

All patients undergoing outpatient colonoscopy and prescribed sodium picosulfate plus magnesium citrate will be eligible for enrollment.

Inclusion Criteria:

• Adult patients
• Scheduled for outpatient colonoscopy at a later date
• Prescribed evening-before or split-dose low volume preparation regimens

Exclusion Criteria:

• Refusal to receive automated telephone reminder
• No access to telephone
• Urgent/emergent indication for colonoscopy
• Prescribed a bowel prep other than Pico-Salax/Purgodan
• Receiving upper and lower combined procedure