Colonoscopy preparation kits consist of laxatives and electrolytes in tablet or liquid form. There are different types of kits — some are prescription, while others available are over the counter.

Most of the time, you’ll need to start colonoscopy prep days in advance. However, your timeline will depend on your doctor’s recommendations. Colonoscopies might not be the most exciting way to spend ...

Sometimes, the preparation solution to clear the bowels before a colonoscopy does not work, or only partially works. A person can speak with their doctor about ways to make the prep more effective.