• you may continue to drink clear liquids only until midnight. The evening before your procedure. Pin On My Top 10s Five days before your colonoscopy, you should start adjusting your diet to help make your preparation easier on your body. How to prep colonoscopy . (i won’t apologize for being graphic in a blog post about colonoscopies). Go over the colonoscopy prep instructions at least a week before the actual test. It’s important to make sure your colon is empty before the procedure. Patients are required to drink an offensive flavored liquid in large amounts the day before the procedure in. Eggs, white toast, jam • lunch: Colonoscopy prep is no one's idea of a fun time, but there are ways to make the process more tolerable. During a colonoscopy, we put a thin tube with a camera at the end into your colon (a part of your intestines). • start drinking the bowel preparation at 6 pm the evening before your colonoscopy. Supplies may include laxatives, stool soft...