Colonoscopy Prep Instructions

The colonoscopy prep is usually the part people dread the most when scheduling a colonoscopy. However, Dr. Ari Nowain utilizes the latest in low-volume prep and can help make sure you have a comfortable experience.

Dr. Nowain typically prescribes Suprep bowel preparation. It works well because it cleans the bowels and allows Dr. Nowain to visualize the bowel better. By lowering the risk of missing polyps, Suprep minimizes the chances of having to repeat the procedure. You ultimately spend less time under anesthesia, and perhaps most importantly, your chances of preventing colon cancer are much higher!

Unclean bowel – harder to detect small polyps

Clean bowel – easy for Dr. Nowain to detect small polyps










Day Prior to Colonoscopy

You will be on a clear liquid diet on the day before your colonoscopy. No solid food until after the colonoscopy.

At 7 pm, you will begin drinking the Suprep to clean the bowel.

  • Step 1: Pour one six-ounce container of Suprep into the mixing container.
  • Step 2: Add cool drinking water to the 16-ounce line on the mixing container.
  • Step 3: Drink all the liquid in the container.
  • Step 4: Drink two more 16-ounce glasses of water over the next hour.

It is very important that you drink the all the liquid between 7-8 pm.

After you have consumed the bowel prep, you can continue to drink clear liquids until 12 midnight, but not after.

Day of the Colonoscopy

Five hours before your procedure, repeat steps 1-4 from the previous night using the second bottle of Suprep.

You cannot drink anything in the six hours before your colonoscopy. It is very important that your stomach be emptied for the anesthesia to be safely administered.

Before the colonoscopy, let Dr. Nowain know of:

  • Any health conditions
  • Allergies (medications, etc)
  • Previous surgeries (especially in the abdominal region)
  • Medication you are currently taking

Please provide Dr. Nowain with a list of medications (over the counter and prescribed) – along with the dosages – you are currently taking, including:

  • Herbal supplements
  • Aspirin
  • Vitamins
  • Recreational drugs
  • Insulin or pills for diabetes
  • Arthritis medicine
  • Blood thinners or heart medicine
  • Vitamins that contain iron

Dr. Nowain may have already told you to stop taking some of these a few days or weeks before your procedure. If you have any confusion, please contact us immediately.

Dr. Nowain may ask you to avoid aspirin or any anti-inflammatory drugs like Advil™ or Aleve®. However, Tylenol® is OK to take.

Bowel Preparation for a Colonoscopy

This may come as a surprise, but many claim the worst part of a colonoscopy is the bowel prep. We strive to make this part of the process as easy as possible for you by using a low volume preparation. Dr. Nowain and his staff will provide you a list of instructions that tell you everything you need to do.

What to eat and drink

In the two days prior to your colonoscopy, you will be put on a clear-liquid diet.

You can consume:

  • Water
  • Broth
  • Plain coffee (no milk allowed)
  • Tea
  • Popsicles
  • Jell-O®
  • Juice

Do Not Eat:

  • Solid food
  • Dairy products (milk, cheese, yogurt)
  • Eat or drink anything that’s purple or red
  • No red or purple Jell-O or popsicles
  • No red juice (like cranberry juice)

In your colon, red and purple can look like blood and make it hard for Dr. Nowain to tell the difference between blood versus food coloring.

If you have any questions or wish to schedule an appointment, please contact Dr. Nowain’s office at 310-657-4444.