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.

You need to follow a special diet and may take laxatives to clean out your bowel before a colonoscopy. Drink plenty of clear liquids to avoid dehydration during the bowel prep. You might need to split ...

To prepare for a colonoscopy, you may need to avoid fiber in the days leading up to your appointment and follow a clear liquid diet beginning the day before. Preparation also involves taking laxatives ...

Colonoscopy vs. Sigmoidoscopy: What’s the Difference? If your doctor wants to check the health of your colon — whether as part of a routine screening or to investigate a concern — they may recommend a ...