Digestive Health

Colonscopy - Golytely/Nu-Lytely 2 day preparation

Have someone drive you or be available to drive you home the day of the procedure. Due to the sedation you will not be allowed to drive yourself. Somebody responsible for you can accompany you in a taxi but no public transport is allowed. This is for your own safety. Your procedure will be canceled if you do not have a ride.

It is recommended that you do not go back to work, do any strenuous exercise, drive or sign any legal documents after the procedure.

Please contact our office immediately if you have any of the following medical conditions and have not already discussed this with us:

Please notify us if you have any special health care needs.


Purchase Go-lytely (or Nu-lytely) from your drugstore using the prescription enclosed. It comes in powder form and you need to mix it with water when you are ready to use it. Please note that if it is kept mixed for longer than 2 days it loses its effect.

7 days before colonoscopy

Stop taking iron, aspirin, aspirin products or Pepto Bismol.

Please note that Tylenol (acetaminophen) does not interfere with the procedure. Please consult your physician if you have any questions about your medication, especially if you have been told not to stop taking these drugs suddenly without medical advice.

2 days before colonoscopy

Stop taking non-steroidal anti-inflammatories (e.g. Motrin, Advil, Feldene, Naprosyn Nuprin, Celebrex and Vioxx).

Consume clear liquids all day (see menu sheet). Do not drink milk or red colored liquids as this can interfere with the test. Medicines should be taken on your regular schedule except for those mentioned above.

1 day before colonoscopy

Same as previous day: consume clear liquids only. Medicines should be taken on your regular schedule, except those already contra-indicated.

Start the 4 liters of Go-lytely (or Nu-lytely) between noon and 4:00pm. It will take 3 to 4 hours to drink (approximately 1x 8oz glass every 10 to 15 minutes).

To make it easier to palate, here are a few suggestions:

You may feel full and have mild indigestion from the large volume of liquid, but these symptoms are temporary.

Day of colonoscopy

Your ride can contact the Endoscopy Unit at (650) 725-8117 to find out if you are ready to be picked up on the day of the procedure.

If you need to change or cancel this appointment please notify us at least one week in advance at the office of Gastroenterology at (650) 725-3374. This will enable us to schedule another patient for that appointment time.

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