Medical Oncologist
CION Cancer Clinics
Myth: a colonoscopy is unbearable | CION Cancer Clinics
A colonoscopy is not unbearable. With sedation, most people describe it as a short nap and remember little or nothing. The part people dislike is the laxative drink the evening before, which is unpleasant but not painful. This page explains what the test really feels like, where the frightening stories come from, and what you can ask for so that fear does not delay a test you need. At CION Cancer Clinics in Hyderabad, our oncologists explain colon cancer in plain words and plan care around you and your family.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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Commonly believed
Is a colonoscopy really as bad as people say?
"A colonoscopy is agony. My uncle said he would never go through it again."
Most people in India now have a colonoscopy under sedation, which means they are drowsy or asleep and remember little or nothing. The stories of agony usually come from older procedures done with no sedation at all, or from the preparation the night before, which is unpleasant but not painful.
"The tube is huge. It must tear something."
The colonoscope is a thin, soft, bendable tube about as wide as a finger. It is designed to follow the curves of the bowel. The bowel wall is not cut or stretched, and serious injury is rare enough that most endoscopists go years without seeing one.
"The laxative drink is the worst part, and nobody can finish it."
The drink is the part people complain about most, and that is fair. It tastes salty, you drink a lot of it, and you spend the evening near a toilet. Split-dose timing, chilling the drink and sipping through a straw make it manageable. Almost everyone finishes it.
"You cannot work or travel for days afterwards."
Most people eat a normal meal the same afternoon and return to work the next day. The real limits are small: no driving, no signing important papers and no alcohol on the day of sedation. A district patient usually travels home the same evening with a companion.
The honest version
What does a colonoscopy actually feel like?
With sedation, most people describe the test as a short nap. You lie on your left side, a small cannula goes into a vein on the back of your hand, and the next thing you clearly remember is waking up in the recovery area. Without sedation, the main feeling is bloating and a cramping pressure as air is used to open the bowel so the camera can see.
Why the old stories are different
A generation ago, many colonoscopies in India were done with little or no sedation, in a hurry, with older and stiffer scopes. Air was pumped in and stayed in, so people went home bloated and sore. Today the scopes are thinner and more flexible, many units use carbon dioxide instead of air because it is absorbed faster, and sedation is routine. Your uncle's memory is real. It is also out of date.
Who finds it harder
A few groups genuinely have a tougher time: people who have had several abdominal operations, women who have had a hysterectomy, very thin people and anyone with a long, looping colon. The scope has to work round scar tissue and sharp bends. Tell the team if any of this applies to you. They can plan deeper sedation, use a smaller scope or change position during the test. If you are simply very frightened, say so. That is enough reason for sedation on its own.
Discomfort is not a sign that something has gone wrong. Severe pain is, and the team will stop if you report it.Not sure whether this applies to you?
Ask an oncologistOn the day
What happens from the night before to going home?
The evening before
You stop solid food and drink the bowel preparation in two halves, one in the evening and one early the next morning. Clear liquids such as water, coconut water and clear soup are allowed. The bowel preparation page walks through the timing.
Arrival and consent
A nurse checks your blood pressure, asks about medicines, especially blood thinners and diabetes tablets, and places the cannula. The endoscopist explains the test and you sign a consent form. Ask then if anything is unclear.
The test itself
Sedation is given through the cannula. The scope passes gently round the whole colon and is then withdrawn slowly while the lining is examined. Any polyp seen is usually removed there and then, which you will not feel. The whole thing commonly takes about twenty to forty minutes.
Recovery and the report
You rest until the sedation wears off, pass some wind, have a drink and a snack, and are given a printed report with pictures. If a biopsy was taken, that result follows separately. Someone must take you home.
Things you can ask for
What makes a colonoscopy easier, and what is your choice?
None of these are special favours. They are ordinary options, and asking for them before the day is the simplest way to have an easier test.
Sedation, and how deep
Light sedation leaves you drowsy but able to respond. Deeper sedation, given by an anaesthetist, means you sleep through it. Ask which the unit offers and what each costs. Neither is unsafe for most people, but both need a companion to take you home.
Say this at booking
- "I want to be asleep for it"
- "I have had a bad experience before"
- "I have had abdominal surgery"
A preparation you can finish
If you have struggled with the drink before, say so. There are lower-volume preparations and different flavours. Chilling it, using a straw, and sucking a lemon slice between glasses all help. Clear rasam without solids counts as a clear liquid.
A poorly cleaned bowel is the commonest reason a test has to be repeated, so finishing the drink matters more than enjoying it.Dignity and privacy
You are covered throughout and only a small opening in the gown is used. You can ask for a female or male endoscopist where the unit has both, and for a relative to stay until sedation starts. The page on embarrassment covers the rest of what people worry about.
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Did you know
A colonoscopy is the one cancer test that can also prevent the cancer. A polyp removed during the test never gets the chance to turn into anything. That is why a test that feels like a nap, done once every few years, does more for the colon than any tablet or diet.
Being straight with you
What this page cannot tell you
It cannot tell you how your own colonoscopy will feel. Pain thresholds, past surgery and the shape of your colon all differ, and a small number of people do have an uncomfortable test despite everything above. What this page can tell you is that the test is far easier than its reputation, and that fear of it is a poor reason to delay when you have a symptom or a positive stool test.
Who this does not apply to
Some people should not simply book a standard colonoscopy. If you are on blood thinners, have severe heart or lung disease, are pregnant, have active severe colitis or have had a recent bowel operation, the test needs planning with your doctor first. Sedation itself needs a check if you have sleep apnoea or a history of reacting badly to anaesthetic. None of this rules the test out. It changes how it is arranged.
What it also cannot do
It cannot tell you whether you need a colonoscopy at all. That depends on your symptoms, your age and your family history. The screening colonoscopy page covers the test done when you are well, and the diagnostic colonoscopy page covers the test done because of a symptom. CION does not perform colonoscopies itself. It arranges them through accredited diagnostic partners in Hyderabad and reviews the report with you afterwards.
If fear is the only thing stopping you, call the helpline and say so. Someone will talk you through exactly what the day looks like.Questions we are asked
Common questions about colonoscopy and pain
Will I be awake during the colonoscopy?
Usually not fully. With light sedation you are drowsy and may drift in and out, and most people remember very little. With deeper sedation you sleep through it. A few people choose no sedation so they can drive home, and that is allowed, but most Indian units recommend sedation.
Is the bowel preparation drink dangerous for older people?
It is safe for most older adults, but it moves a lot of fluid through the body. Anyone with kidney disease, heart failure or on diuretics should have the preparation chosen by their doctor, and should keep drinking clear fluids alongside it. Dizziness or very little urine during the preparation means you should call the unit.
Can I have a colonoscopy if I have piles?
Yes. Piles do not stop the scope passing, and they are often seen and noted during the test. The reason the test still matters is that piles and a colon cancer can exist together, and blood blamed on piles sometimes turns out to come from higher up. The scope settles that question.
Will I feel it if a polyp is removed?
No. The bowel lining has no pain nerves of the kind that feel cutting, which is why polyps can be removed with a wire snare or forceps without any extra anaesthetic. You may be told to avoid heavy lifting for a few days afterwards if a larger polyp was taken, and a little blood in the first stool is expected.
Is a CT colonography or a stool test a gentler alternative?
A FIT stool test needs no preparation and is a reasonable screening choice for people without symptoms, but a positive result still leads to colonoscopy. CT colonography still needs the same preparation and cannot remove a polyp. Neither replaces colonoscopy when you have symptoms.
How long will I be at the hospital?
Plan for half a day. The test itself is short, but admission paperwork, the wait for your slot and recovery from sedation add up. District patients often book a morning slot so they can travel home the same evening. Bring a companion, your medicine list and any previous reports.
What problems can actually happen?
The known risks are bleeding after a polyp is removed, a small tear in the bowel wall, and a reaction to sedation. All are uncommon, and the unit will tell you the warning signs to watch for at home. Severe abdominal pain, heavy bleeding or fever after the test means going to an emergency department, not waiting.
How much does it cost in Hyderabad?
It varies by hospital, by the depth of sedation and by whether biopsies or polyp removal are needed. Ask for a written estimate before the day. The colonoscopy in Hyderabad page explains what is usually included and how Aarogyasri and other schemes treat the test.
Your Specialists
Meet CION's colon cancer specialists. Bring your colonoscopy, scan or biopsy report.
Our surgical and medical oncologists plan colon cancer care together: which operation, whether chemotherapy is needed, and the follow-up that comes after.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- NHS — Colonoscopy
- NIDDK (NIH) — Colonoscopy
- American Cancer Society — Colorectal Cancer Screening Tests
- Cancer Research UK — Bowel cancer screening
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
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Putting off a colonoscopy because you are afraid of it?
Tell us what is worrying you and we will explain exactly what the day looks like, then arrange the test through a partner unit that offers sedation. One helpline serves every CION centre.