Two Day Preparation Instructions for Colonoscopy | Boston Medical Center
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Two Day Preparation Instructions for Colonoscopy

Download these instructions as a PDF

The Day You Schedule Your Appointment 

  • Plan time off of work for the day of your colonoscopy.
  • You MUST have an escort to come into the hospital and take you home after the colonoscopy so start making these arrangements.

7 Days Before Your Appointment

  • Fill prescription for the laxative and purchase one bottle of Magnesium Citrate at the pharmacy
  • Stop taking Iron pills. Multi-vitamins can be continued.
  • If you are taking Coumadin/Warfarin or any other type of blood thinner please call your primary care doctor/Coumadin Clinic today for instructions on stopping the medication before your procedure.

2 Days Before Your Appointment

  • Drink at least 8 glasses of water today.
  • STOP eating high fiber foods such as vegetables and beans until after your colonoscopy.
  • You can eat all other types of foods today.
  • Drink the bottle of Magnesium citrate after dinner.
  • The Day Before Your Appointment
  • ALL DAY TODAY FOLLOW A STRICT CLEAR LIQUID DIET. DO NOT EAT ANY FOOD OR THICK LIQUIDS AT ALL!! Examples of clear liquids are: water, apple juice, broth( NOT SOUP WITH THINGS IN IT) Jell-O, tea/coffee without milk/cream, sodas, sports drinks, and popsicles, but nothing red colored.
  • 6 PM Place mixed laxative solution inside of the fridge to cool (no ice cubes)
  • 8 PM Drink half of the Laxative Solution – 1 cup every 10-15 minutes
  • Plan time off of work for the day of your colonoscopy.

The Day of Your Appointment

  • 6 hours before your appointment time, drink the remaining half of the laxative solution. You
  • must finish it at least 2 hours before the colonoscopy (finishing it 3 to 5 hours before is best).
  • If you have diabetes: Take half the dose of your insulin on the day of procedure and skip
  • diabetes pill(s) unless directed otherwise. You should check your blood sugar level in the morning.
  • Take all of your other regular medications at least 2 hours prior to your test.
  • Stop taking anything by mouth, including clear liquids, at least 2 hours before the colonoscopy.
  • Stop taking Iron pills. Multi-vitamins can be continued.

If you can not keep this appointment please call 617-414-2600.

If you have any questions please contact the Patient Navigator 617-414-2494/617-414-2640

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