Preparing for your colonoscopy

Guide to bowel preparation

Thursday, March 20, 2025

The success of your colonoscopy largely depends on how well you prepare for it. A clean bowel allows your specialist to thoroughly examine your colon, ensuring the most accurate results. While bowel preparation might seem daunting, understanding the process can help make it more manageable.

Why proper preparation matters

  • A thorough bowel preparation is crucial because it:

  • Allows clear visualisation of your entire colon

  • Reduces the need for repeat procedures

  • Increases the detection rate of polyps and abnormalities

  • Makes the procedure more efficient and comfortable

  • Ensures the most accurate results

Your preparation timeline

5-7 days before

  • Consult with your doctor about your current medications

  • Stop taking iron supplements and any fiber supplements

  • Avoid seeds, nuts, and whole grains

  • Plan your preparation days (time off work, support at home)

  • Food such as rice, noodles, white bread, eggs, white meat (fish, chicken, pork) are generally okay to continue

3 days before

  • Begin a low-fiber diet

  • Avoid:

  • Raw fruits and vegetables

  • Whole grains

  • Seeds and nuts

  • High-fiber cereals

  • Tough meats

  • Stock up on clear liquids for your preparation day

 The day before

  • Allowed clear liquids:

  • Water

  • Clear broths

  • Apple juice

  • White grape juice

  • Sports drinks (not red or purple)

  • Black coffee or tea (no milk)

  • Clear sodas

  • Jelly (not red or purple)

Your preparation schedule:

  • Start your clear liquid diet from the moment you wake up

  • Begin taking your bowel preparation solution as prescribed

  • Stay near a bathroom

  • Keep yourself hydrated

  • Continue clear liquids until bedtime

The day of procedure:

  • Nothing by mouth as directed by your doctor

  • Arrive at your scheduled time

  • Bring a companion to take you home

Tips for successful preparation

Making the solution more palatable

  • Chill it before drinking

  • Use a straw placed far back on your tongue

  • Follow each glass with a clear liquid chaser

  • Keep the solution cold throughout the process

Comfort measures

  • Stay near a bathroom

  • Use soft, unscented toilet paper

  • Consider using wet wipes

  • Apply barrier cream to prevent irritation

  • Wear comfortable, loose clothing

  • Plan entertainment (books, tablets, etc.)

Stay hydrated

  • Drink plenty of clear liquids throughout the day

  • Watch for signs of dehydration

  • Follow your doctor's guidelines on fluid intake

What to expect

Normal effects

  • Frequent bowel movements

  • Loose, watery stools

  • Mild abdominal cramping

  • Some nausea

When to contact your doctor

  • Severe abdominal pain

  • Severe nausea or vomiting

  • Signs of dehydration

  • Inability to complete the preparation

  • Fever

Common questions

  • How do I know if I'm clean enough?
    Your stools should be clear or light yellow liquid with no solid matter.

  • What if I vomit the preparation?
    Contact our clinic immediately for guidance. We may need to adjust your preparation method.

  • Can I go to work during preparation?
    We recommend staying home with bathroom access during the preparation period.

Our support

As your healthcare provider, we're here to support you through this process. Don't hesitate to contact our clinic if you have:

  • Questions about preparation

  • Concerns during the process

  • Need for clarification on instructions

  • Unexpected reactions to the preparation

Success rates

With proper preparation:

  • Over 95% of colonoscopies achieve excellent visualisation

  • Reduced need for repeat procedures

  • Higher detection rates for polyps and abnormalities

  • More accurate results

Remember, while bowel preparation might be uncomfortable, it's a crucial step for a successful colonoscopy. Our team is committed to making this process as smooth as possible for you. 

Contact our clinic immediately if you experience any severe symptoms or have concerns during your preparation.

Mon - Fri: 9:00am - 5:00pm
Sat: 9:00am - 12:00pm
Sun & Public Holiday: Closed

Mon - Fri: 9:00am - 5:00pm
Sat: 9:00am - 12:00pm
Sun & Public Holiday: Closed

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