Wet wipes, apple juice and Jell-O
The smoothest way to prep for your first colonoscopy
When patients come to me for their first colonoscopies, the first thing I usually say is, “Congratulations!” As a gastroenterologist, I applaud them for doing something important for their health and share in their joy that the hardest part of the colonoscopy process — the preparation — is behind them.
Whether a colonoscopy is in your future because your doctor would like to investigate symptoms such as chronic diarrhea or rectal bleeding, or you’re being screened for colorectal cancer (recommended for most people to begin at age 45), you’ll need to prepare. I spoke with other experts who shared tips on how to make the experience smoother.
Not your grandfather’s colonoscopy
If you’ve heard about colonoscopies from family members or friends, you may be surprised by how much the preparation and procedure have changed from prior generations.
You’ll still have to cleanse your colon beforehand, but there are new laxative options — in liquid, powder and pill form — that won’t require you to chug more than a dozen cups of salty formula in one sitting. The Suprep Bowel Prep Kit, for example, requires drinking just two cups of liquid laxative — once in the evening before your procedure, and once the morning of. And Sutab, a pill-based option that involves swallowing two doses of 12 tablets, is enticing for those who wish to avoid liquid- or powderbased laxatives, which can taste unpleasant.
The procedure itself has also modernized. There are now safer ways to puff up the colon to hunt for precancerous growths, better cameras to aid in the hunt and more sophisticated techniques for removing abnormal tissue.
Colonoscopies have become so much safer and more comfortable that it’s common for my patients to wake up after the procedure and ask, “Is that it?”
Colonoscopies, like all procedures, can come with certain serious yet rare risks. Your preparation will vary depending on your medical needs and the laxatives you are prescribed, so it’s important to review everything with your physician in advance.
Before the purge
On the day before your colonoscopy, you will begin bowel preparation. This involves starting a clear liquid diet and taking laxatives that cleanse your colon. Laxatives are split into two doses — one taken the night before the procedure and another taken the morning of. A poor prep is the reason up to one-quarter of colonoscopies cannot be completed.
“A substantial portion of precancerous lesions in the colon are quite subtle,” said Dr. Douglas Rex, a gastroenterologist and professor of medicine at Indiana University School of Medicine. “In order to see those well, the colon has to be clean.”
Three days before your colonoscopy.
Cut out high-fiber foods such as nuts, seeds, whole wheat bread and raw vegetables, as they take longer to pass through your digestive tract and can make it harder for your doctor to see inside your colon.
Some people think of the time before their liquid diet as their last chance to eat well, but overindulging can set you back — the more you eat, the more your body will need to expel.
You’ll also want to make sure you have someone scheduled to pick you up after the procedure (you won’t be allowed to drive because of the sedation).
The day before your colonoscopy.
When you wake up, you’ll start a strict clear liquid diet (which can also include certain foods). Water, chicken broth and apple juice are allowed, as are pulp-free ice pops or Jell-O, as long as everything is clear or light in color. (Red Jell-O, for instance, can be mistaken for blood.) Black coffee and tea also count as clear liquids, “so your mornings don’t have to be totally ruined,” said Dr. Audrey Calderwood, director of The Comprehensive Gastroenterology Center at Dartmouth Hitchcock Medical Center.
Usually by the afternoon or evening, you’ll be instructed to take the first dose of your prep, so plan for a cozy night in and stay close to the bathroom.
If your prep needs to be mixed with another liquid, that liquid must be clear, but you can get creative with the flavor combinations. Ginger ale, fruit juice or sports drinks can make the solution more palatable.
Some people do not like the taste of certain preps, so if you get queasy easily, ask your physician in advance for anti-nausea medication. Drinking your prep solution with a straw can limit the smell; sucking on mints between sips can also blunt any bad tastes. Or chill the prep in the refrigerator; just avoid using ice if you aren’t going to drink it quickly, Calderwood said. When the ice melts, it will dilute the mixture, resulting in more volume to drink.
Don’t drink alcohol the day before your procedure. While it technically might be a clear liquid, alcohol can cause dehydration and interfere with sedation, which can make for a dangerous combination.
The purge will happen anywhere from a few minutes to a few hours after starting your laxative, so stock up beforehand on gentle toilet paper or wet wipes with soothing witch hazel or aloe vera.
The morning of your colonoscopy. Several hours before your procedure, you will likely be instructed to take the second dose of the prep. You will also need to stop drinking all liquids at least two to four hours before your procedure, as directed by your physician.
By this point, your stools should be liquid and see-through. If they’re not, be honest with your doctor. “The last thing you want is to put in all this effort, take time off and then the job doesn’t get done,” Rex said. It’s normal for patients who have certain conditions (such as chronic constipation) or who are on certain medications (such as opioids) to take longer to prep adequately, so review your medical history with your physician.
Pack a snack for the car ride home — you’re going to be hungry and may want more than the crackers the nurses might offer you in the recovery area.
It’s important to follow your doctor’s instructions ahead of the procedure. If you don’t, you’ll have to go through the process again sooner — within one year as opposed to up to 10 years, as is recommended for most people with a normal examination and a clean prep.
The bottom line
For many, Calderwood said, the psychological aspects of preparing for a colonoscopy are more challenging than the physical ones. You’ll have to contend with (a lot of ) diarrhea, a lack of solid food for 24 hours and sedation for a procedure — all of which can feel overwhelming.
“It’s almost like gearing yourself up to run a marathon,” she said. Just remember, it’s not an insurmountable task. “Lots of people before you have done it and are doing it every day.”