You will need to purchase the following items for your bowel prep: A. One bottle Miralax Powder (238g), laxative (over-the-counter medication)* B. Bisacodyl 5mg tablets (four tablets), laxative (over the counter medication)* C. For Rectal Cancer Surgery ONLY: 2 Fleets Enemas* *Please call our office if you have allergies to any of the above medications.