Camera test to check your stomach and intestines 

Avoid nuts, seeds, grains, and leafy vegetables for 72 hours (3 days) before your colonoscopy. 

Clear fluids only for 24 hours (1 day) before your colonoscopy. As a rule, a clear fluid is any fluid that you can see through (this includes: water, apple juice, lemonade, black coffee, and black tea). 

Start your bowel preparation solutions the night before your colonoscopy. This involves 2-3 sachets of bowel preparation solution (Phosphoprep, ColonLYTELY, Glycoprep, Bisalax, Durolax, Picolax, or Picoprep). You may require extra sachets if you have experienced difficulty with adequate bowel preparation in previous colonoscopies. The expected result is to have clear fluid passing into the toilet by the time of your colonoscopy.