Colonoscopy Prep FAQs: Tips for an Easier Experience

Among preventive cancer screenings, colonoscopy stands out. This procedure doesn’t just allow physicians to find colorectal cancer early. It also lets them remove potential future cancers — small growths called polyps that may turn cancerous later — at the same time. Unfortunately, however, some adults miss out on this screening’s benefits because they are nervous about one factor: colonoscopy prep.

To prepare for a colonoscopy, you’ll need to change your diet and, potentially, your medication regimen a few days before the procedure. When most people think about colonoscopy prep, though, one aspect comes to mind: bowel prep. This is the process of clearing the large intestine (your colon) of stool to give the general surgeon or gastroenterologist a clear view. Bowel prep has a reputation for being uncomfortable, but you can take steps to help it go as smoothly as possible. Let’s dig into some frequently asked questions about colonoscopy prep.

Why Put Up With Colonoscopy Prep in the First Place?

Over the past 40 years, colorectal cancer screenings, including colonoscopy, have contributed to a drop in diagnoses, according to the American Cancer Society (ACS). If you’re at average risk of colorectal cancer, the ACS recommends starting screening with a colonoscopy or another early detection test at age 45. Start earlier if you’re at high risk due to factors such as a family history of colorectal cancer. Put simply, getting screened with a colonoscopy or another test is the most important step for preventing colon cancer.

A successful colonoscopy hinges on a clean colon. Colonoscopy prep prepares the organ for its close-up by flushing out stool with a laxative. A clear colon allows your general surgeon or gastroenterologist to see and, if necessary, remove polyps in the colon lining.

“Typically, the bowel prep involves drinking a large volume of fluid to clean out the colon,” said Brianne Crofts, MD, General Surgeon at Memorial Hospital of Sweetwater County. “It’s important to stay hydrated before and after the bowel prep by drinking water and clear liquids. Most people don’t have any issues with tolerating the bowel prep.”

What Types of Colonoscopy Prep Are Available?

A variety of bowel preparation products are available. They typically contain a laxative to prompt you to poop and electrolytes to help prevent dehydration.

Bowel preps fall into two main categories:

• Polymer-based formulas — often called PEG because their main ingredient is polyethylene glycol 3350 — usually come in powder form. You take them by mixing the powder with a high volume of water, which can be difficult for some people to finish.
• Saline-based formulas contain sodium phosphate (NaP) to trigger pooping. You can take this type of colonoscopy prep in tablet form, which may be easier than liquid prep solutions for some people.

Your physician will help determine the most appropriate form of colonoscopy prep for you based on your gastrointestinal health, personal preferences, and potential for side effects, such as cramping and gas.

What Should You Do Before Starting Colonoscopy Prep?

Follow your physician’s dietary instructions closely. You may need to avoid whole grains, beans, and other high-fiber foods for a few days before the colonoscopy. Drink only clear liquids, and don’t eat any solid foods the day before the procedure. You may need to stop taking certain medications, such as blood thinners, a few days before the colonoscopy.

[H2] How Long Does the Prep Process Take?

You’ll begin taking your prescribed colonoscopy prep product the afternoon or evening before your screening. Timing varies, so be sure to follow the instructions with your prescription.

The colonoscopy prep may take from one to six hours to start working, depending on the product. Expect to spend a lot of time in the bathroom, although precisely how long — and how often you’ll poop — is difficult to predict. Make yourself comfortable by keeping your phone or tablet (with charger) and a book or magazine handy.

Don’t stray far from the bathroom during the prep process. The urge to poop can hit suddenly and leave little time to make it to the bathroom.

What Happens if You Can’t Drink All the Colonoscopy Prep?

It’s important to finish the entire prep to thoroughly clear your colon. To make things easier, try dividing the liquid prep into smaller portions, such as drinking four 8-ounce glasses over the course of an hour or sipping through a straw.

[H2] How Can You Sleep During Prep?

Timing is key. You’ll be more likely to finish pooping before you go to bed if you follow your prescription’s instructions for when to start the colonoscopy prep. Some products call for a two-dose split — you’ll take one dose the evening before your colonoscopy and one the morning of the procedure. This may allow you to sleep overnight.

[H2] How Will You Know When the Colonoscopy Prep Is Done?

Look for liquid, clear, yellow-tinged bowel movements that resemble urine. That’s the signal you’ve made it through the toughest part of the colonoscopy process.

How Can You Soothe Irritation on Your Bottom After Prep?

Use a soothing cream, such as petroleum jelly, to ease burning and irritation. Just be sure to apply it when your skin is dry to avoid making symptoms worse.

Are you due for a colonoscopy? Make an appointment by calling 307-352-8192 or learn more about our General Surgery team.