Ahhh, colon prep! When I had a colon, this use to be something I did not enjoy doing (does anyone??), but it was a necessary part of making sure that I was properly cleaned out before my GI could scope me.
Since frequent colonoscopies come with having IBD or any other GI disorder, it’s important to know just how to do prep right; failing to properly prep for a scope could mean that your doctor won’t be able to get a good look, and may even reschedule you for another!
Disclaimer: Always follow your doctor’s instructions when it comes to colon prep. Also, if you have other health problems (like diabetes), you should let your doctor know before doing the prep.
What is a Colonoscopy?
A colonoscopy is a test that allows a doctor (usually our GI) to explore your large intestine using a tiny camera mounted to the end of a flexible tube. This tube is called an endoscope, although I’ve also seen it referred to as a colonoscope.
Alternatively, your doctor may do a sigmoidoscopy, which only examines the last part of your bowel (the sigmoid colon and rectum).
Colonoscopies are often done as a preventative measure to catch polyps before they turn cancerous. In the case of IBD, colonoscopies are used to confirm a diagnosis and see the extent of inflammation in the gut.
Keep in mind that colonoscopies are only used to explore the large intestine and they can’t reach the small bowel. For upper GI tests, including the stomach and small intestine, an upper endoscopy needs to be done instead, or in addition to, a colonoscopy.
Colonoscopies are usually done in less than 30 minutes, although the prep often requires several days at least.
Food, Where Art Thou?
This step is approx. 2-3 days before the scope
Food restrictions a few days before your scope should be expected (although not easily accepted!). Keep in mind that your doctor will likely (should!) be giving you instructions on what you can/can’t eat and when to start restricting certain foods.
Of course, not all instructions are the same, and I’ve received different instructions from different doctors in the years I was having regular scopes.
Food You’ll Likely Be Asked to Avoid
- Whole nuts and seeds.
- Raw fruits and vegetables (especially kiwi! I know from experience!)
- Popcorn/corn in general.
- Beans/legumes
- Whole grain/whole wheat grains.
- Mushrooms.
Food You CAN Eat During This Phase
- Tofu
- Smooth nut butter.
- Refined grain products (cereal, crackers, bread, pasta, oatmeal, white rice, etc.)
- Canned fruits and vegetables (canned peaches, canned carrots, etc.)
- Applesauce.
- Mock meats tend to be safe but avoid any that have thick “skins”.
- Potatoes (skinned).
- Vegetable juices and fruit juice without pulp.
- Smoothies (avoid adding fruit with tiny seeds).
- Most liquids like soft drinks, coffee, tea, sports drinks, etc.
Don’t Forget the Meds!
This step is usually required approx. 1-7+ days before your scope.
If you’re taking any medication or supplements, you may need to stop taking these several days to a week or more before your scope!
Some of the stuff I was asked to stop taking before my procedure:
- Iron supplements.
- Fiber supplements.
- Multivitamins.
The Liquid Fast
This step usually starts 24 hours before the scope,
About a day before your scope, you’ll be asked to go on a clear liquid-only diet to make it easier for the prep to do its thing.
These Drinks Should be Fine
- Water (obviously!) but don’t rely only on tap water as it contains a low amount of electrolytes.
- Tea
- Clear broth.
- Sports drinks (not colored red!).
- Soft Drinks / Pop (stuff like ginger ale, Sprite, 7-UP, carbonated water, etc.).
- Electrolyte drinks that aren’t colored (Pedialyte, Drip Drop, etc.)
- Coconut water (NOT coconut milk).
These Drinks Should NOT Be Consumed
- Drinks colored red, purple, orange, or blue. (most common colors to avoid).
- Milk (dairy or non-dairy).
- Coffee with cream/milk (usually black coffee is allowed).
- Alcohol (mostly because it dehydrates you).
The Prep
This step often starts less than 12 hours before the scope depending on products used).
Your doctor will recommend a purgative, laxative, and perhaps even a stool softener to help purge your system the night/morning before your procedure.
There are many brands and types of purgatives, but I really prefer PICO-SALAX, which not only tastes great, but it’s easy to take. The cranberry flavored Pico-Salax is also free of animal ingredients, so it’s an obvious choice for me (many products contain at least lactose, so double-check the ingredients if you wish to avoid it).
Since there are so many different types of products used for the actual prep, it’s important to follow the instructions for the products given to you; I can’t cover everything in this article, and their use may differ slightly.
If you have questions about the products you’re taking, please speak to your doctor.
As the prep works and there seems to be no end to the amount of liquid your body is passing through it, you should notice that liquid coming out of you is becoming clearer. By the end of your prep, your liquid stools should look more like pee, but don’t be alarmed if it’s still a little cloudy.
Tips for Getting Through Your Prep
- Plan to stay home while the prep does it’s magic because you’ll want to be close to a toilet at all times.
- Don’t ignore those electrolytes (sodium and potassium). Make sure you’re replacing them through the liquids you’re consuming.
- You may feel dizzy and weak due to the combination of fasting and losing so much fluid through the day. Keep on top of your fluid intake, and consume sugary drinks to replace those lost calories.
- Try to relax during the prep. There’s no need to start a building project while your system purges, so throw on a few good movies and relax.
- Get the best toilet paper you can. If that means buying 3-play, luxury toilet paper, then do it! Your ass will thank you!
- Your butt may still get sore. Depending on the shape of your butthole, going to the bathroom more often because of the prep may cause “butt burn”. A bidet, showers, and/or zinc ointment may help with this.
The Scope
Before You Arrive
You’ll be asked to stop drinking liquids about 2 hours before your procedure, but this may also depend on your prep schedule and when your scope takes place.
Be sure to have someone available who can drive you back home after the scope, since your doctor likely won’t let you drive for about 24 hours (if anesthesia was used).
By the time you are at your clinic/hospital, your urgency should be subsided and you won’t feel as if you need to live in the bathroom. Of course, if you’re going into the scope with active disease then this may not be a realistic expectation so let your nurses know that you may still need to use the bathroom.
When You Arrive
You’ll be asked to change into a hospital gown, and you may be asked to sit in a waiting room or be placed on a hospital stretcher until your doctor is ready.
Most people are put under during their scope, although you may be given the option to stay awake. I’d suggest being put under, as the procedure is quite uncomfortable as you get pumped with air to expand your insides.
After Your Scope
When you doctor is done having a look, you’ll be put in another room while you come out of your anesthesia. This will also be the place where you (along with other patients) will be “degassing” as the air that was pumped into you comes out. Don’t worry, though, these farts won’t smell as there’s nothing really in your gut that puts off odor at this point.
Passing gas will also help to relieve any discomfort, so don’t be modest and let them loose!
Once you’re feeling up to it, you can have a follow-up with your doctor to go over the results of the scope. If this colonoscopy was simply routine, then you may not need this extra appointment and your doctor’s office will call if they need you to come in.
You will be allowed to eat after your scope, but take it easy for the day – keep meals small until the next day.
Conclusion
Hopefully, you won’t have to do too many of these, but if you do, I hope the results are always positive.
Getting a scope isn’t a big deal, and if you go into it expecting to be tortured, then you likely won’t have a good experience.
As always, please discuss your concerns with your doctor so that you can be more prepared for what to expect.
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18 Comments on "Colonoscopy Prep: TIPS"
What about post-op? Anything we should know about changes in our microbiome from the lavage? Is this a non-concern?
Great info, thanks. I feel like most doctors I’ve seen aren’t able to suggest vegan alternatives when it comes to diet restrictions. I am curious, though, what you know about other smooth nut products (such as cashew cheese/cream, creamy walnut sauce) during the “no nut” phase. It would seem that if smooth peanut butter is OK, these would be too since they’re blended to a creamy consistency. Of course I’ll ask my doctor, but do you have any info on that?
Smooth nut butters are often fine a few days before, but not within 24h of the scope. I’d personally stay away from almond nut butter even a few days before because I find it contains too many bits (of almond skin?) in it.
I wish I would have read this BEFORE my colonoscopy! I did what the doctor told me (avoid nuts, seeds, corn, and popcorn) but they said nothing about fruits, vegetables, beans, or whole grains, which I eat everyday! Because of that I wasn’t clean enough, and my doctor seemed annoyed! Grrrrr! He said come back in two years, which makes no sense if he couldn’t get a good look. Jerk.
Argh! That’s so frustrating!
On the bright side, now you know for the next time!
Take care.
This is very helpful as I recently started a plant based diet and am having a colonoscopy next week. Just one correction- tap water does have plenty of electrolytes in it.
Hey Parker, glad the article is helpful.
I’ve updated the wording on that part, so thanks for bringing it up.
Electrolyte content of municipal water tends to be too low to make a difference.
For example, the median sodium content in mg/L is 18 according to one study that compared the electrolyte content of various water : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1495189/
Have a good one!
Thanx, but not needed. Finding something from internet jungle in english is easy – you just type your question in english ;=)
Finding reliable info is a another thing.
Being vegan is more rare in Scandinavia than in english spoken part of the world, so you are also able to find less info here. I’ve been vegetarian 39 years and vegan 11 years.
That works! LOL
If you’re ever up to it, I’ve love for you to share your experience about living as a vegan in Scandinavia on our Community Forums: https://www.veganostomy.ca/community/
Take care,
Eric
I could not find any prep guidance in finnish or swedish for vegans – so thank you for all this wonderful information you provided!!!
You’re welcome, Rita! Were you able to find this article easily even though it’s in English? Would it have helped if I had a “translate” button to convert the text to Finnish or Swedish?
Thank you so much for this thoughtful, very helpful and reassuring article! I wish you good health!
You’re welcome, Maia!
I love how honest you are….seriously I haven’t laughed this hard in a long time. All good tips I know I’m going use!
=) Not everyone can laugh at the subject, but I’m glad you did!
If I have an ileostomy and have none of my large intestine left will they do an ileoscope or do they do the upper endoscopy way to look at the small intestine? Just wondering…
I had an ileoscopy in that case :)