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Doctor insights on: How Many Hours Before A Colonoscopy Should You Stop Eating

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Dr. Charles Cattano
2,047 Doctors shared insights

Colonoscopy (Definition)

Colonoscopy is the procedure of using a long flexible camera to visualize the entire colon from the inside with the option to take pictures, video, perform biopsies, remove polyps, etc. Generally people are sedated and do ...Read more


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How many days before a colonoscopy should I stop drinking alcohol? Should I stop just during the bowel prep and the day of the procedure?

How many days before a colonoscopy should I stop drinking alcohol? Should I stop just during the bowel prep and the day of the procedure?

Agree with below: Not a question that most social-only drinkers would ask. Daily alcohol consumption can make sedating you more difficult as your liver is revved up. Would try to stay away for at least 5-7 days if you're drinking more than 2drinks/day or 14/week. ...Read more

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Why do u have to stop diary products a few days before a colonoscopy?

Why do u have to stop diary products a few days before a colonoscopy?

Clear liquids: Are recommended for the colonoscopy prep in order to optimize visualization. If the bowel secretions are cloudy from milk proteins it is more difficult to clear the area completely and have an optimal view of the bowel lining through the scope. Following the prep instructions exactly gives you the best chance of having the most accurate examination. Good wishes:) ...Read more

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Are there certain medications I should stop taking before my colonoscopy?

Are there certain medications I should stop taking before my colonoscopy?

Possibly: In general, we will want you to continue taking all of your usual medications prior to your colonoscopy, even the morning of the procedure. However, some medications such as ibuprofen, aspirin, anti-platelet agents and warfarin will increase the risk if bleeding if polyps are removed. Depending why you are taking any of these medications, your endoscopist may want you to stop them. ...Read more

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When is it safe to stop getting routine colonoscopies?

When is it safe to stop getting routine colonoscopies?

Unknown: If patient is old enough to prevent cancer and comorbidities risk do not outweigh benefit than continue into the 80 year old range. If you find it ok for an 85 or 90 year old to get colorectal cancer which is preventable than stop at 80. ...Read more

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I had a colonoscopy today at 1. It's now 11 and I'm having dhiarrhea and cramping. When should that stop?

I had a colonoscopy today at 1. It's now 11 and I'm having dhiarrhea and cramping. When should that stop?

A day or two: It's not unusual to have some bowel irregularities for a couple of days following colonoscopy. Your large intestine was just as close to being empty as it has pretty much ever been so it takes a bit of time for it to reestablish that regular function. Don't know if there is scientific evidence to support, but probiotics (from pills or foods) might help restore regular bowel movements. ...Read more

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How can I get diarrhea to stop one day after colonoscopy?

It must have by now: Otherwise send us an update of this problem now, so that we can deal with the present situation. ...Read more

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Do I have to stop smoking before an endoscopy/colonoscopy?

Do I have to stop smoking before an endoscopy/colonoscopy?

You should quit.: You don't have to quit in order to have the procedure. But truthfully you should try to quit smoking as it is very unhealthy and is the number one preventable cause of death in the developed world. Especially someone like you, who is having endoscopy, that means you are at even greater risk of developing esophageal cancer. If you are interested, ask your doc about medical ways to help you quit. ...Read more

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When I had my last colonoscopy, and taking fossamax, my gastro dr. Said I would have to take Prilosec forever. I have stopped fossam. Can I stop pril?

When I had my last colonoscopy, and taking fossamax, my gastro dr. Said I would have to take Prilosec forever. I have stopped fossam. Can I stop pril?

Fosomax: Unrelated to a colonoscopy. Unclear why those two medications would be used together. Unrelated likely. Speak to your gastroenterologist. ...Read more

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I am preparing for colonoscopy in 4 days. Should I stop intravenous infusions of iron and vitamin b12?

I am preparing for colonoscopy in 4 days. Should I stop intravenous infusions of iron and vitamin b12?

Consult doctor: Intravenous infusions of iron and B12 are not usual treatments. You should consult the doctor who prescribed this treatment. ...Read more

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Why did my colonoscopy end up being very painful. My doctor had to stop half way. I'm 19 male and a ectomorph?

Anatomy: Thin people have little internal fat; bowel can get bunched up in the pelvis. Some people have lots of loops amd turns in the bowel-more of a challenge. Some people have internal scars (adhesions)-harder to get around. Some have inflammation. Some are resistant to meds. Some docs have a heavy hand. ...Read more

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I'm getting endoscopy and colonoscopy on 18th, do I need to avoid alcohol? How long before procedure do I need to stop drinking?

I'm getting endoscopy and colonoscopy on 18th, do I need to avoid alcohol? How long before procedure do I need to stop drinking?

Ask your doctor: You certainly need to avoid it after midnight the night before the procedure, since you will likely have sedation with these tests, but the final arbiter on how long you should be without alcohol before the test is the gastroenterologist who is going to perform the tests. It should be in the instructions you get before the procedure, and if it isn't, you should ask. Good luck. ...Read more

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Doctor took biopsy on multiple sites during colonoscopy due to inflammation. Said it may be due to prep. Is she being kind to stop me worrying?

Doctor took biopsy on multiple sites during colonoscopy due to inflammation. Said it may be due to prep. Is she being kind to stop me worrying?

It is possible: Some types of bowel preps can certainly cause some nonspecific irritation of the colon lining. The biopsies would be appropriate to confirm this. ...Read more

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If I did one bottle of Suprep for my colonoscopy and things are running completely clear and resemble urine, can I stop drinking this nasty drink?

If I did one bottle of Suprep for my colonoscopy and things are running completely clear and resemble urine, can I stop drinking this nasty drink?

Absolutely not!: Finish your colon prep, as per provided instructions. If the prep is inadequate, your colonoscopy will be too, and you'll be invited back with a bigger prep to try again. ...Read more

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I am having a colonoscopy & endoscopy fri. I have been drinking aloe gel for my esophagus. Should I stop drinking it & when?

I am having a colonoscopy & endoscopy fri. I have been drinking aloe gel for my esophagus. Should I stop drinking it & when?

Stop right now pls: Aloe is commonly recommended for worm infestation, stomach disorders, colic, constipation, diabetes, arteriosclerosis, menstrual complaints, skin disorders. However, aloe is contraindicated in cases of intestinal obstruction, inflammatory bowel disease, appendicitis, & unexplained abdominal pain. Always weigh all pros and cons of any product (prescription or herbal) before ingestion please. ...Read more

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I had a colonoscopy yesterday how long before I can stop worrying about complications? Bowel perforation bleeding infection......etc

I had a colonoscopy yesterday how long before I can stop worrying about complications? Bowel perforation bleeding infection......etc

Stop today: I it was a simple diagnostic study, and you feel fine, you can rest assured that your ok. Even it they performed a biopsy, chances are you'll be just fine. You can't do anything about it anyway, and off you had sifnificant bleeding, you would see blood in the stool. Call your doctor if this happens. Hope this helps! ...Read more

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Is it safe to stop effient 5 days before colonoscopy? Cardiac md ok but we are concerned. Stemi 10/2013, complicated. Re clotted 20 min after stent

Antiplatelet Rx: No precise literature guidance;talk to a local cardiologist or hematologist about bridging options to the colonoscopy off the antiplatelet (s) proportionate to your coagulation system capabilities ...Read more

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Went got all blood tests was normal / nuclear stress test normal / chest X-ray / catscan / colonoscopy / endo / pft / still feel tightness and like can't catch my breath and my heart beat gonna stop. Getting worse and worse. Cardiol said clear? Lung?

Went got all blood tests was normal / nuclear stress test normal / chest X-ray / catscan / colonoscopy / endo / pft / still feel tightness and like can't catch my breath and my heart beat gonna stop. Getting worse and worse. Cardiol said clear? Lung?

Normal test results: Yet you are still concerned. Please continue to see your doctor. Also, your very real symptoms may be anxiety related. Please see a mental health professional to learn some stress management techniques. One good one is clinical hypnosis (see www. Asch. Net) for referrals to licensed professionals. Peace and good health to you. ...Read more

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I have had hypothyroidism. I got C. Diff back in July & don't have anymore but still recovering. My stomach area is very bloated (protruding) & I can't stop burping & passing gas. Do I have ulcer? How can I help? I got CT scan & colonoscopy = nothing

I have had hypothyroidism. I got C. Diff back in July & don't have anymore but still recovering. My stomach area is very bloated (protruding) & I can't stop burping & passing gas. Do I have ulcer? How can I help? I got CT scan & colonoscopy = nothing

Bacterial overgrowth: You give the symptoms of bacterial overgrowth syndrome which is a form of irritable bowel syndrome. The cause of this is a prior intestinal infection of any kind. You need to test for bacterial overgrowth syndrome. Less likely to be an ulcer. Avoid gas producing foods like onions. Avoid spicy foods. Take lactobacillus in pill form daily. Other probiotics could worsen problem. Follow up with GI MD. ...Read more

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Since 24 hrs diarriah yellowish did colonoscopy 3 days ago. All good, not eating well going to bathroom almost every hour. Please help?

Since 24 hrs diarriah yellowish did colonoscopy 3 days ago. All good, not eating well going to bathroom almost every hour. Please help?

It will pass: Drink plenty of fluid especially with sugar and salt. If its small amounts, even if frequent, and you're not dizzy when you sit or stand up, you should be fine. If large volumes or you get dizzy upright, you may need intravenous fluids. Have some salty broth a couple of times. ...Read more

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How long does it take to gain back weight lost during colonoscopy procedure as eating is very limited for few days.

Mostly water: The weight lost during preparation for colonoscopy is mostly water and could be gained back in one day. However if the weight loss is due to some pathology for which colonoscopy was done, then it would depend on the pathology. ...Read more

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Why does it take 2-4 hours to perform the colonoscopy?

It doesn't: It doesn't unless you have a specific problem. ...Read more