Colonoscopy patients will need to take several steps to ensure a successful procedure. Purchase bowel preparation materials at least two days before your test. Your doctor may provide you with a prescription for a laxative to cleanse your bowel. This can be filled at any pharmacy. If you do not receive a prescription from your doctor, your doctor may recommend you purchase the following:
- One bottle of MiraLAX (238 grams)
- 4 Dulcolax (Biscacodyl) tablets (5 mgs each tablet)
- 64 ounces (two 32 ounce bottles) of Gatorade (not red or orange) or Crystal Light Natural Lemonade. If you are a diabetic, you should purchase Crystal Light Natural Lemonade or Pedialyte instead of Gatorade.
Prior to Your Colonoscopy:
- Two days prior to your test try to eat a low residue diet and follow a clear liquid diet the day before your test (see the section on food and drink).
- Make arrangements for a responsible adult to bring you home after your procedure.
- Review your medication list one week prior to your test (see the section on medications). Contact your ordering provider if you have any questions about the medications list below.
- Bring a list of all your medications (prescription medications, over-the-counter medications and eye drops) along with dosages with you on the day of your colonoscopy procedure.
- You may bring the medication bottles themselves.
- Be prepared to list and describe your allergies and reactions to any medications.
- Be prepared to provide the name, address, phone, and fax number of your family and referring physician.
- Bring your photo ID.
- Bring your insurance card(s).
- Bring referrals, if applicable.
Note: Any out of pocket co-pays, coinsurance, and deductibles are expected on the day of service.
To properly prepare for your procedure, you may also need to make certain changes to your daily medication routine. Some medications will need to be stopped or adjusted before your procedure:
- Iron Tablets: Stop taking iron supplements seven days prior to your procedure.
- Diabetic Medication: If you take insulin or diabetes pills, consult with your physician one week prior to your procedure about making any necessary changes in your daily regimen. Some adjustments may be needed. Please inform your physician that you will be on a clear liquid diet the day prior to and the day of the test. It is typically recommended that you do not take your diabetes pills or insulin on the morning of your test. Make sure you check your blood sugars often while taking the prep solution and during the morning of your test.
- Blood Thinners (Some examples include Coumadin, Plavix, Heparin, Lovenox, Fragmin, Pradaxa, Zorpin, and Xarelto): Check with your prescribing physician one week prior to the procedure to see if it is safe for you to continue taking a blood thinner. Your prescribing physician should give you directions on how to take them before and after your test. Do not stop taking any medications without speaking with your prescribing physician.
- If you take medications that contain aspirin or other anti-inflammatory drugs (such as Motrin, Advil, Indocin, or Feldene), we recommend that you stop taking them seven days before your procedure. They may increase your risk of bleeding after removal of a polyp or a biopsy during your colonoscopy by interfering with the normal clotting of your blood.
- Certain medications should be continued prior to your colonoscopy. If you take cardiac (heart) or anti-hypertensive (high blood pressure) pills, take them as you normally do with small sips of water.
- You can take all other medications the morning of your procedure with a small amount of water. You should take your medication at least three hours before your arrival time.
- RADNOR PATIENTS ONLY: DO NOT take any diuretic medication (water pill), the day of the procedure. If you are scheduled in the morning, please DO NOT take the following blood pressure medications: Valsartan (Diovan), Losartan (Cozaar), Irbesartan (Avapro), and Candesarten (Atacand).
Follow a clear liquid diet the day before your procedure. Starting when you wake up, do not eat solid food for breakfast, lunch, or dinner. Do not drink milk or alcohol the entire day before. You should drink only clear liquids. Make sure you drink at least 8 oz. of clear liquids every hour while awake. (If you are a diabetic, you will need to drink Crystal Light Natural Lemonade or Pedialyte.)
Clear liquids include the following:
- Water: tap, spring, sparkling, or seltzer
- Juice: apple, white grape, or white cranberry
- Soda: diet or regular, lemon, lime, ginger ale, Sprite, or 7Up
- Coffee or Tea: No milk, cream, or powered creamer
- Gelatin: Jell-O (Not red or orange)
- Sherbet, Popsicles or Water Ice: lemon or lime (Not red or orange)
- Clear Broth: beef or chicken broth without noodles
- Gatorade: (Not red or orange)
- Crystal Light Natural Lemonade
If recommended by your doctor, take four 4 Dulcolax (Biscacodyl) tablets by mouth at 4 p.m. the day before your procedure. If your doctor has recommended using MiraLAX, mix the entire 238 gram bottle with 64 oz. of Gatorade, Crystal Light Natural Lemonade, or Pedialyte in a large pitcher. Stir and place in refrigerator (must be consumed within 24 hours of mixing.
Beginning at 5 p.m. the day before your procedure, drink an 8 oz. glass of your laxative every 15 minutes:
- 5:00 p.m.- Drink 8 oz. of laxative solution
- 5:15 p.m.- Drink 8 oz. of laxative solution
- 5:30 p.m.- Drink 8 oz. of laxative solution
- 5:45 p.m.- Drink 8 oz. of laxative solution
If you feel full or experience nausea or significant abdominal pain, wait before drinking the next glass. It may be easier to drink each 8 oz. glass rapidly rather than drinking small amounts continuously. Drink the entire gallon of fluid. You should begin having bowel movements within the hour.
If you are scheduled for a morning procedure, you should have nothing by mouth (including gum and mints) after midnight. Continue to consume clear liquids until bedtime, but no later than midnight the night before. The exception is medication taken with small sips of water.
- After the colonoscopy, you will go to a recovery area where a nurse will watch you until most of the effects of the relaxing medicine have worn off.
- You may have some cramping or bloating because gas is placed into your intestine during the test. This should go away after several hours.
- The nurse will give you information about how to take care of yourself at home.
- A copy of your test report will be sent to your referring doctor.
- We will provide a phone number for you to call for results of biopsies or other tissue sampling performed during your test.
- You should not: Drive a car, operate any machinery or power tools; drink any alcoholic beverages, or make any important decisions until the following day.
If you would like to speak to a nurse regarding your procedure or preparation, or if you need to reschedule your procedure, please call the appropriate number:
- Perelman Center for Advanced Medicine
- Procedure Questions: 215-662-2122
- To Reschedule: 215-349-8222
- Penn Presbyterian Medical Center
- All Questions: 215-662-8900
- Pennsylvania Hospital
- All Questions: 215-829-3561
- Penn Medicine at Radnor
- All Questions: 610-902-1500
These instructions apply to patients scheduled for procedures at Penn Gastroenterology. However, your doctor may give you different instructions or procedures. If you have questions about your procedure, contact your physician at Penn Gastroenterology.