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How to Prepare for a Colonoscopy 

Colonoscopies are a critical screening tool for colon cancer, and the Centers for Disease Control and Prevention recommend screening beginning at age 50Colonoscopies can detect polyps – small growths that can be removed before they become cancerous. Some people are hesitant to schedule this important screening procedure because of the preparation involved, so what does it really involve and are there ways to make it easier?  

Preparing your colon for the procedure takes several daysBut the preparation is necessary to ensure doctors and technicians can clearly see the inside of your bowels and don’t have to repeat or reschedule the procedure.  

This means the colon must be completely empty before the colonoscopy.  

While the exact means by which this is accomplished will depend on your doctor, there are some general guidelines to follow. Check with your doctor for instructions on whether to continue to take prescription medications and any vitamins during the preparation for the procedure.  

Start several days in advance.

Begin to taper your diet to low-fiber foods several days in advance of the procedure – which means no whole grains, nuts, seeds, dried fruits or raw fruits and vegetables.  

The day before the procedure, switch to a liquid diet only. Stay away from any liquid dyed red, blue or purple. Here are some foods that are OK to consume:  

  • Black coffee or tea  
  • Clear broth or bouillon  
  • Clear juice like apple or white grape  
  • Clear pop or sports drinks  

The day of the procedure only consume clear liquids. Two hours before the procedure, do not eat or drink anything.  

Read the preparation instructions completely. 

Doctors will prescribe a liquid, drinkable laxative that will trigger high-volume diarrhea. Read the instructions on the packaging to allow yourself time to ask any questions. This will be consumed the afternoon or evening before the procedure. 

Chilling the drink and drinking through a straw can help make the experience better, as it often doesn’t taste good. 

Stock up on products

Have your bathroom ready with medicated wipes like Tucks or wet wipes, toilet paper and Vaseline for skin irritation. 

Plan for privacy. 

Once you drink the liquid laxative – often called the “prep” – it will be difficult to control your bowels. Clear your schedule and delegate responsibilities to someone else for the afternoon. Gather magazines, reading materials, music or your laptop to keep you company and stay as close to the bathroom as possible.  

Split the prep. 

Talk to your doctor first, but you may be able to split your prep between the night before the procedure and the morning of the procedure. This may help you avoid feelings of nausea after drinking so much laxative at one time.  

Also, instead of drinking the entire prep amount at once, you may also be able to drink small amounts of the prep throughout the day before the procedure.    

Learn more about colorectal cancer, screening and resources at www.bcbsm.com/colorectal 

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