HF 7661

Getting Ready for Your Colonoscopy (SUPREP)

Important: Please read at least 1 week before your procedure.

1 Week Before Your Procedure


  • Arrange for an adult to drive you home. You will not be able to drive or return to work after your procedure.

  • You may take a cab or bus only if you have an adult who can go with you.

  • If you need help finding a way to get to and from your visit, contact Patient Resources at 608-821-4144.

Health Changes

Notify us of any major health changes, illnesses, or recent hospital stays. Call (608) 890-5010 for procedures at DHC. For procedures at UW Hospital GI Procedure clinic, call (608) 263-8094. For procedures at Meriter/Unity Point, call (608) 417-6389.

Blood Thinning Medicine Changes

You may need to stop or adjust blood thinning medicines before your procedure. You must call the doctor who prescribes the medicine to discuss this, or we may not be able to complete your procedure.

Diabetes Medicines

Your medicine and your blood sugar testing may need to be changed during your prep time. You must call the doctor who prescribes the medicine to discuss this, or we may not be able to complete your procedure.

Iron and Multivitamins with Iron

Stop taking 5 days before your procedure. (You do not need to contact your doctor first.)

In Case You Are Constipated

Those who are often constipated or have not had a clean colon for a past procedure may need extra prep. Please call to discuss this in more detail.

3 Days Before Procedure

Low Fiber Diet

Stop these foods and medicines:

  • Corn, popcorn, seeds or nuts.

  • Uncooked vegetables, beans and lentils, potato skins.

  • Fruits with skins or seeds.

  • Whole grain breads, granola or high fiber cereals.

  • Fiber supplements (like Metamucil®, Citrucel®, or Benefiber®).

  • Anti-diarrhea medicines (like Kaopectate®, Lomotil®, Pepto-Bismol® and Imodium® or loperamide).

See website for tips of what you can eat. www.uwhealth.org/digestivehealth

Pick up Bowel Prep

Call your pharmacy to let them know you will be picking up your bowel prep. Please pick up your bowel prep 3 days before your procedure. Do not mix until the day before the procedure.

1 Day Before Procedure

Clear Liquid Diet

  • If your arrival time is before 11 am, stop eating solid food and begin clear liquid diet at 10 am.

  • If your arrival time is after 11:30 am, stop eating solid food and begin clear liquid diet at 2 pm.

Clear Liquid Diet Rules

  • No creamers, milks or other dairy products.

  • No solid food.

  • Drink at least 8 glasses of clear liquids all day to prevent dehydration.

  • No red or purple liquids.

Clear liquids include these “see-through” items:

  • Water, clear sports drinks like Gatorade®

  • Broth

  • Black coffee, tea, soda

  • Apple juice

  • Jell-O®


Take your daily medicines today, except those you were told to stop. Take your medicines at least one hour before or one hour after drinking your prep.

Bowel Prep Bottle #1

Follow the directions below for drinking prep, not the directions on the container.

  • If your arrival time is before 11 am, drink dose #1 starting between 4 pm and 6 pm.

  • If your arrival time is after 11:30 am, drink dose #1 starting between 6 pm and 8 pm.

For each dose:

  1. Pour one 6-ounce bottle of SUPREP liquid into the mixing bottle.

  2. Add cool drinking water to the 16-ounce line on the bottle and mix well. Drink all the mixed liquid.

  3. Drink two (2) more 16-ounce bottles of water over the next 1 hour.

Bloating and/or nausea may occur. You will have loose, then liquid, stools. This is normal. If you have a great deal of nausea or vomiting, slow down or stop for 30 minutes. Then start again. If your bowels do not begin to empty after several hours, or you have severe cramping, feel dizzy, or lightheaded, call us at (608) 890-5010.

Procedure Day


  • Stay on clear liquids

  • No Food

  • Nothing to drink for 4 hours prior to your arrival time

Bowel Prep Bottle #2

  • Mix 16 ounces of cool water and begin drinking 6 hours before your arrival time.

  • Drink two more 16-ounce bottles of water over the next 1 hour. Drink all the mixed liquid.

  • Finish bottle #2 and any other liquids 4 hours prior to your arrival.

*You may have no more than ½ cup (4 ounces) water with medicines at least 1 hour before your arrival.

As you finish the prep, your stools should be watery clear or yellow, with no solids (flecks of stool are OK). If you are still passing solid or brown stools, call us at (608) 890-5010.

What to Bring

  • CPAP or BiPAP and any inhalers that you use.

  • Eyeglass or contact lens case, denture cup

  • Ostomy supplies

  • Wear comfortable clothing.

  • Do not bring valuables, money, or jewelry.

Tips for a Successful Colon Prep

  • Plan on each dose taking several hours.

  • Stay near a bathroom. Stock up on soft toilet paper and reading materials.

  • If you don’t like the taste of the prep, you may add yellow lemonade Crystal Light® to the mixture. We suggest mixing it into 1 glass at a time.

  • Drinking the prep through a straw may help improve the taste.

  • Between glasses, you can chew gum or suck on slices of lime or lemon or hard candies. Avoid red or purple candy.

  • After you mix the prep, we suggest you put it in the fridge. Take it out of the fridge at least 2 hours before you start drinking it, so you won’t feel too cold.

  • If you get chilled, try putting a blanket in the dryer to warm it up before using.

What to Expect

  • Your visit at UW Digestive Health Center will last about 2 -3 hours, from the time you check in until the time you can leave.

  • It is up to you if your driver stays in our waiting room or in your private room where private medical information will be discussed.

  • Before the procedure, the doctor will talk with you, answer questions, and ask you to sign a consent form.

  • An IV will be placed by a nurse.

  • Medicines will be given during your procedure to help you relax and keep you comfortable.

  • After your procedure, your doctor will talk with you about the results and give you a report. We strongly suggest that you have your driver wait in your private room to hear the results with you. It is your choice to have your driver with you when the doctor talks to you.

  • You will feel sleepy when you leave.

  • Plan to spend the day resting at home. You cannot drive or return to work due to the sedation medicines. Most patients are able to return to their normal activities the day after their procedure.

  • If biopsies are taken or polyps removed, you can expect to get lab results 1-2 weeks after your procedure, either by phone or by mail.

  • It may take up to a week for your bowel habits to return to your normal.

See website to find out more such as, prep video, diet tips, and prep worksheet. www.uwhealth.org/digestivehealth

Who to Call

Digestive Health Center

(608) 890-5010

UW Hospital GI Procedure Clinic

(608) 263-8094

Meriter/Unity Point

(608) 417-6389

If you are a patient receiving care at UnityPoint – Meriter, Swedish American or a health system outside of UW Health, please use the phone numbers provided in your discharge instructions for any questions or concerns.