This is assuming that the colonoscopy will be early in the morning.
Prescription says:
Once having initiated the prep (drinking Nulytely), do not eat anything solid. Only take liquids like coffie, clarified juice, tea, and water. If you feel hungry, you may eat ONE toasted slice of white bread with butter or jam.
On the eve of prep day, take two tablets of Dulcolax at night.
On prep day, at 14:00 (2pm), take 2 tablets of Dulcolax.
Prepare Nulytely (each packet is diluted in one liter of water).
At 17:00 (5pm) start drinking one glass every 20 minutes till you have drunk two liters.
Stop taking Nulytely for 2 hours.
Drink another liter of the Nulytely solution.
Your evacuations must be clear, yellowish, without residue. If not so, prepare another packet of Nulytely in one liter of water and drink two more glasses.
One hour after your last glass of the solution, take one tablet of Dulcolax.