A colonoscopy preparation is needed ... a stool softener such as Dulcolax (bisacodyl) in two doses along with the polyethylene glycol. OsmoPrep and Visicol Tablets (sodium phosphate monobasic ...

These products come as tablets that you swallow. Your doctor might ask you to take oral bisacodyl in addition to another bowel preparation medication before your colonoscopy. Do not combine ...