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Test Preparation Instructions    
"Gatorade" Prep for Colonoscopy

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An Important Exam Requires Careful Preparation

Your doctor has decided that colonoscopy is necessary to better evaluate your colon, or large intestine. An important examination such as this requires careful preparation. The results obtained from this exam are dependent on your lower bowel (colon) being carefully cleansed and empty. An improperly prepared bowel may mean that the exam will have to be repeated at another time. More importantly, fecal matter (stool) left in the intestinal tract can hide important conditions that may be present. Therefore, it is very important that you follow these instructions as carefully as possible. If the test is worth doing, it deserves the best possible preparation.

A couple of hints... To fully evacuate the colon, this preparation will cause you to have many liquid bowel movements. Note that individual responses to laxatives vary widely. Plan to remain within easy reach of toilet facilities. Many patients find that Charmin Plus toilet tissue minimizes anal irritation from repeated wiping. Also. rubbing a small amount of hydrocortisone cream, such as Cort-Aid, around the anal area after each bowel movement can lessen the irritation. On the day of your exam, wear comfortable easily-removable clothing and leave jewelry and other valuables at home. If you are having a menstrual period, it is OK to wear a tampon.

No laxative preparation is fun. However, this new preparation has been developed to make the process as simple and effective as possible. Please follow each instruction exactly as given. If you have any questions, call our office - (412) 262-1000 option #2.


  • One bottle of Miralax powder 255 gram (prescription from your physician)
  • Small box of Dulcolax Laxative Tablets
  • One 64 oz. bottle of Gatorade Thirst Quencher. Any flavor or color.

Discontinue any fiber supplements: Metamucil, Citrucel, Fiberall, etc. Do not take iron pills or vitamins containing over 15 mg of iron.

No solid food or milk products all day.
Clear liquid diet all day beginning with breakfast (see below).
You may take your normal medications. Patients on blood thinners like Coumadin or on insulin may require special instructions. Call the office 412.262.1000 if questions.

    At 3:00 p.m. take 4 Dulcolax tablets by mouth with a large glass of water.
    At 5:00 p.m. mix the 255 gram bottle of Miralax in 64 oz. of Gatorade. Shake the solution until the Miralax is dissolved.
    Drink an 8 oz. glass every 10-15 minutes until the solution is gone.
    Continue drinking clear fluids (water, tea, clear fruit juices) until bedtime.

1. Do not eat or drink anything that day. You may brush your teeth and chew gum.
2. If you take medication, you may have it on the morning of the procedure with a small amount of water.
3. Arrive at the Endoscopy Center at least 30 minutes prior to the time of your colonoscopy. Please be on time. Wear comfortable loose clothing and leave jewelry and valuables at home. Click here for directions.

NO DRIVING: If you are having a colonoscopy, you will be sedated and cannot drive, use a taxi, or a bus after the procedure. You must be accompanied by an adult. This person must remain in our office the entire time of your visit. This averages about 90 minutes. If this procedure is not followed, your procedure may be canceled.


    SOUPS: Clear bouillon, broth or consomme.
    BEVERAGES: Tea, coffee, decaffeinated tea/coffee, Kool-Aid, carbonated beverages and sodas.
    DO NOT put any milk or cream in the tea or coffee.
    JUICES: apple juice, strained lemonade, limeade, or orange drink.
    DESSERT: Water ices, Italian ices, lemon jello, and popsicles (except red)

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