Pre-endoscopy Instructions

These instructions are meant to be a general guideline. You will be given more specific instructions from your gastroenterologist and anesthesiologist. Your anesthesiologist will attempt to phone you the night before your procedure. If your anesthesiologist has been unable to reach you by 9 pm the night before your procedure and you have questions, you can speak to the on-call anesthesiologist through the answering service at 972-566-5632. 

Week before your procedure

You may be asked by your gastroenterologist to stop blood-thinning medications such as Coumadin (warfarin), Pradaxa (dabigatran), Xarelto (rivaroxaban), Eliquis (apixaban), Lovenox (enoxaparin), Plavix (clopidogrel), Effient (prasugrel), and Brilinta (ticagrelor).​​​​​​

It is extremely important that the doctor that prescribed the blood-thinning medication (i.e., cardiologist, primary care physician, hematologist) is part of the decision-making with regards to the timing of the interruption of your blood thinning medication. Some conditions require an alternate, shorter-lasting medication to bridge your therapy before your procedure. Some medicines require up to seven days for the blood thinning effects to adequately diminish. Allow enough time to contact your doctor and learn the safest plan for the interruption of your blood thinning medication.

Day before your procedure

Have a light breakfast and lunch before NOON. 
DO NOT eat solid food after NOON. 
DO NOT eat anything after midnight the night before your procedure unless instructed differently by your anesthesiologist.


sport drinks
(avoid red & purple drinks)
apple juice
white grape juice
(avoid brown, red & purple drinks)
popsicles (avoid red or purple)​​
Jell-O (avoid red or purple)
beef, chicken or vegetable broth




grapefruit juice
orange juice
tomato juice
red & purple drinks
dark cola

Morning of your procedure

On the day of your surgery, please do not put mints, candy, or chewing gum in your mouth. You may brush your teeth on the day of your procedure.​​


Less than 4 hours prior to your procedure do NOT drink anything in addition to not eating.

Less Than 4 hours before your procedure

Clear liquids from the list are encouraged up to four hours before your procedure is scheduled to start.

Greater than 4 hours before your procedure

​​​You will be given more customized instructions by your anesthesiologist based on your specific medications and medical conditions. In most cases, your anesthesiologist will ask you to follow the instructions in the boxes below. You can take your pills with a small amount of water. 

TAKE medications for

blood pressure (you may be asked not to take specific types of BP meds)
heart conditions
asthma or COPD
(including inhalers)
acid reflux
chronic pain
Insulin for diabetes (you will most likely need to reduce your dose)


Diuretics (water pills)
Pills for diabetes
Angiotensin Receptor Blockers (usually have names ending in -sartan)