Bowel Prep Instructions - Procedure after 10:00 AM

Sep 27, 2026

Uploaded by Callum

Bowel preparation instructions for a colonoscopy scheduled after 10:00 AM, emphasizing the need for thorough cleansing so clinicians can visualize the colon. The guidance covers diet restrictions for the week before the procedure, stopping iron and fiber supplements, and obtaining PEG prep. It specifies a clear-fluid-only regimen the day before, detailed PEG dosing timelines, and what to do if nausea occurs, including optional Gravol. On the procedure day, it reiterates avoiding solid foods and stopping clear fluids two hours before.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Preparing for your colonoscopy

1 week before

The day before your colonoscopy

The day of your colonoscopy

Fluids that are okay vs not okay

Bowel Prep Instructions Procedure after 10:00 AM Please read all the instructions below before you start your preparation, as the doctor’s ability to visualize your colon depends on a thorough bowel preparation. If the doctor cannot see the inside of your colon on the day of your colonoscopy, you may have to repeat the procedure. *If you have any questions, please call your gastroenterologist's office (kamloopsgi.ca/contact-us) Preparing for your colonoscopy: • For 1 week before your colonoscopy do not eat nuts, seeds, foods containing seeds such as berries, cucumbers, tomatoes, all leafy green vegetables, all raw vegetables (cooked and steamed vegetables are OK), multigrain breads, popcorn, oatmeal, corn, quinoa, and granola. • Stop ALL iron and fiber supplements, including Metamucil, 1 week before your colonoscopy. A few days before your colonoscopy, go to any pharmacy and buy: • 4 litre jug of PEG prep (Peglyte or Colyte) The day before your colonoscopy: • NO solid foods. • Drink clear fluids ONLY. These are liquids that you can see through. See the “Fluids that are okay” list on the back of this page. • Try to drink one glass of clear fluids each hour that you are awake. • Mix your PEG prep as described on the jug • Beginning at 6:00 PM, start drinking 250 mL (1 cup) of PEG prep every 10-15 minutes until you finish half the jug (2 litres or 8 cups) . You must drink the first half of the jug within 2 hours (by 8 pm) . • If you feel sick, wait 20-30 minutes, then continue to drink the prep. • You may take Gravol (25-50 mg) if the nausea continues. Gravol may make you drowsy. • The prep will cause frequent loose bowel movements. The goal is to have liquid bowel movements, clear to yellow in colour. The day of your colonoscopy: • Do not eat any solid foods. • Drink only clear fluids. It is important to stop drinking all clear fluids 2 hours before your colonoscopy. • 5 hours before your procedure, drink 250 mL (1 cup) of PEG prep every 10-15 minutes until you finish the 2nd half of the jug (2 litres or 8 cups) . You must finish the jug within 2 hours. | Fluids that are okay:
• Clear soup broth or bouillon | | Food and fluids that are not okay:
• No bread, grain, or rice
• No soups with chunks of food
• No meat
• No fruit or vegetables
• No milk or dairy products
• No red, blue, or purple liquids
• No alcoholic drinks | | | --- | --- | --- | --- | | • Apple juice, white grape juice, white cranberry juice
• Clear or lemon Gatorade/Powerade
• Ginger ale
• Water
• Coffee or tea (no milk or cream)
• Popsicles (not red or purple)
• Lemon or orange Jello | | | | You know that your bowel preparation is complete when your stool (poop) is a yellow to clear coloured liquid:

FAQs

Why is thorough bowel preparation required for a colonoscopy?

The doctor needs a clear view of the inside of your colon. If the colon cannot be visualized on the day of the procedure, the colonoscopy may need to be repeated.

What foods and supplements must be avoided during the week before the colonoscopy?

Avoid nuts, seeds, seed-containing foods (including berries, cucumbers, tomatoes, leafy greens, and all raw vegetables), multigrain breads, popcorn, oatmeal, corn, quinoa, and granola. Stop ALL iron and fiber supplements, including Metamucil, one week before.

How should PEG prep be taken when the colonoscopy is after 10:00 AM?

On the day before, starting at 6:00 PM, drink 250 mL every 10–15 minutes until you finish half the jug (2 litres/8 cups), with the first half finished within 2 hours. On the day of the procedure, stop all clear fluids 2 hours before, and take the second half starting 5 hours before, finishing the full 2 litres within 2 hours.

Sep 27, 2026

Uploaded by Callum