Thornhill Endoscopy Centre - Putting your mind at ease

Flexible Sigmoidoscopy Instructions

The Day Before Your Procedure:

  • Have a light breakfast
  • Starting at 12:00pm and until the procedure is finished, you must remain on a Clear Fluid Diet. NO Solid Foods. You may only have clear fluids, such as apple juice (or other clear juices), pop, tea or coffee (no cream or milk), jello (not red or purple), popsicles, and clear broth/consommé
  • Take 2 Dulcolax Tablets (available at your local drug store without prescription) at 6:00PM

The Day of Your Procedure:

  • Two hours before you leave home, use 2 Fleet enemas (available at your local drug store without prescription). Insert the first fleet enema into the rectum and squeeze all of it. Hold it in for 5 to 10 minutes and use the toilet to empty fully
  • After you have emptied out the first enema, use the second enema in the same way. The knee-chest position and on your left side are both good


  • If you are getting sedation (as per your doctor or personal preference), you must bring someone with you to drive you home, as you will Not be allowed to drive for 24 hours after the procedure
  • If you are on blood thinners (such as Coumadin or Plavix), you may continue taking them as usual. However, if a polyp is found and needs to be removed, you may need to return after discontinuing your blood thinners for several days before your procedure; you must check with your family physician or cardiologist first, and make sure it is safe to discontinue these medications
  • If you are a diabetic and take diabetic medications or insulin, you should consult your family physician before your procedure. You may take one can of Ensure at each mealtime

Preparation Instructions

How To Find Us

Phone: 905.882.6566
Fax: 905.882.6567

390 Steeles Avenue West
Unit 11 & 12, Thornhill, ON
L4J 6X2

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