A typical procedure regimen then would be as follows: in the morning of the day before the procedure, a 238g bottle of polyethylene glycol powder should be poured into 1.9 litres (64 oz.) of the chosen clear liquid, which then should be mixed and refrigerated. Two bisacodyl 5mg tablets are taken 3 pm; at 5 pm, the patient starts drinking the mixture (approx. 8 oz. (0.5 litres) each 15-30 min. until finished); at 8 pm, take two bisacodyl 5mg tablets; continue drinking/hydrating into the evening until bedtime with clear permitted fluids. The procedure may be scheduled early in the day so the patient need not go without food and only limited fluids until later.