CION Ameerpet
Other Immune Therapies
BCG Bladder Instillation — What the Treatment Involves
A BCG instillation is a bladder wash, not a drip. A thin catheter goes in, about 50 ml of cloudy liquid is put into the bladder, the catheter comes straight out, and you hold the liquid in for roughly two hours before passing it. No needle in the arm, no infusion chair, no admission. The usual course is six weekly sessions, then maintenance. Everything below follows NCCN and ESMO patient-education framing, in plain language.
Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed August 2026
- How it actually goes in — a soft catheter for two or three minutes, about 50 ml of liquid, no needle, no sedation, no overnight stay
- How many sessions — six weekly instillations first, then maintenance blocks spread across months; the full schedule is set out in a table below
- What it feels like — the catheter, the two-hour hold and the first pass of urine, described honestly, stage by stage
- Why nobody calls it immunotherapy — it is cheap, ordinary-looking and done in a urology room, yet the treatment is your own immune reaction
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The Appointment
How is BCG put into the bladder?
Through a thin, soft catheter passed into the bladder through the urethra. About 50 ml of BCG in saline is instilled, the catheter is removed straight away, and the liquid stays in the bladder for roughly two hours. There is no injection and no drip. The instillation takes a few minutes; the waiting is what makes the visit long.
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Before you come in
Most centres ask you to cut down fluids for about four hours beforehand, so the dose is not diluted by a bladderful of urine. Report a fever, burning, cloudy urine or fresh blood on the morning of the appointment. Ask your team for their own instruction — it varies between units.
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A urine check comes first
Urine is checked before the dose. An active urinary infection, visible blood or a recent difficult catheter means the instillation is postponed rather than pushed through. Postponement is routine and it is a safety step, not a setback in your treatment.
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The catheter, two to three minutes
You lie on a couch. The area is cleaned, a lubricating gel containing a local anaesthetic is used, and a thin catheter is passed into the bladder. Any urine still in the bladder is drained first. You stay awake throughout and there is no cut anywhere.
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The instillation itself, under five minutes
Around 50 ml of cloudy liquid runs in through the catheter. The catheter is then taken out. That is the whole procedure. You get dressed and walk out of the room with the liquid inside the bladder.
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Two hours of holding it in
This waiting period is the treatment. Many teams ask you to change position every fifteen to twenty minutes so the liquid reaches the whole lining. You can sit, read or walk gently. Some centres let you go home and hold it there if home is close.
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Passing it out, then six hours of precautions
Sit down to pass urine. For about six hours the urine contains live BCG, so add roughly a cup of household bleach to the toilet, leave it fifteen to twenty minutes, then flush, and wash your hands. Drink normally for the rest of the day. Ordinary contact with your family is safe.
BCG is given after the visible tumour has been removed, with the intention of reducing the chance the disease returns in the bladder lining. Whether it is right for you depends on your pathology report and your risk group — a decision for your urologist and the tumour board, not for a web page.
Did you know?
A bladder instillation is one of the least expensive treatments in all of cancer medicine, and India is among the largest producers of BCG in the world. It has been used against bladder cancer since 1976 — decades before the word immunotherapy became everyday cancer language. Most patients are handed a schedule of dates and are never told that what they are receiving is immunotherapy at all.
The Schedule
How many BCG sessions will I need?
Six to begin with — one a week for six weeks. That block is called induction and it usually starts two to four weeks after the tumour is removed. Most people then continue with maintenance: short blocks of three weekly instillations, repeated at intervals over months. Counting only the six and assuming you are finished is the commonest misunderstanding.
Schedules differ between centres and are adjusted to how you tolerate the course. This table is orientation. Your own dates come from your urologist, who sets them from your pathology report and your risk group.
What It Feels Like
What does a BCG instillation feel like?
Uncomfortable, not painful, for most people. The catheter stings for a few seconds. The liquid feels cold and then full. Holding it for two hours is the hardest part. Burning and urgency come afterwards, not during. The first two or three doses are usually easy; symptoms tend to build from the third or fourth.
When to call the same day, not at the next visit
- A fever above 38.5°C, or any fever that has not settled within 48 hours of a dose.
- Shaking chills or rigors, whether or not a thermometer shows a fever.
- Severe pain, heavy bleeding or clots, or being unable to pass urine at all.
- Joint pain, a rash, yellowing of the eyes, a cough or breathlessness after a dose.
Do not wait for the next appointment and do not try to manage a persistent high fever at home. Call your urology team, or reach CION on 1800 202 8726. If you cannot reach anyone, go to the nearest emergency department and tell them you are on intravesical BCG.
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Know what to expect before your first instillation
Bring your pathology report and the schedule you were handed. A CION oncologist will walk you through the procedure, the number of sessions and what to watch for — unhurried, confidential, with no commitment to proceed.
The Thing Nobody Tells You
Is a bladder wash really immunotherapy?
Yes. BCG is a live, weakened bacterium. It does not attack cancer cells itself. It provokes a deliberate immune reaction in the bladder wall, and that reaction is the treatment. That is what immunotherapy means. It looks nothing like an infusion because it is delivered locally, into one organ, usually by a urology team.
Knowing the correct name for it changes the questions you can ask: how the immune reaction is being watched, what an unexpected fever means, and why the course runs for months rather than weeks. No comparison is made here between BCG and any other treatment, and no claim is made that one works better than another — they are used in different cancers, at different stages, on different evidence.
Practical Preparation
How do I prepare for a BCG appointment?
Plan for three hours, not thirty minutes. The procedure is short, the two-hour hold is not. Cut down fluids beforehand, keep the journey home short, and tell the team about any fever or burning before the dose rather than after it.
- Cut down fluids for about four hours before — dilute urine weakens the dose. Follow your own team’s instruction, which may differ.
- Speak up if you are unwell that day — fever, burning, cloudy urine or fresh blood means the dose is postponed. That is normal and it is safer.
- Empty your bladder just before — you will then be asked to hold the instillation for around two hours.
- Block out three hours in your day — the appointment itself is quick; the hold is what takes the time.
- Think about the journey home — holding a full bladder through a long, uncertain commute is the part people most underestimate.
- Keep household bleach at home — for the toilet for about six hours after each dose, as your team will have explained.
- Ask about sex and contraception — most teams advise a condom for a week after each instillation. Ask yours for their exact advice.
- Tell every other doctor you see — including your dentist, and anyone treating you for an unrelated fever, that you are on intravesical BCG.
If a treatment is being offered to you as an “immune therapy” outside a cancer centre, and it involves no catheter, no schedule and no follow-up cystoscopy, it is worth reading how to tell real immunotherapy from an unproven treatment before you pay for anything.
Availability In India
Is BCG available in India, and what if my centre has none?
BCG is made in India and widely used here, yet global supply has been unreliable for more than a decade and Indian centres have felt it. Not every hospital runs a bladder instillation service. When supply is short, teams may reduce the dose, shorten maintenance, prioritise higher-risk patients, or use a different intravesical treatment.
- What is available — intravesical BCG, given by urology teams at centres that run the service. India is among the largest producers of BCG in the world, and it remains one of the least costly treatments in cancer care.
- What is not — this is not something you can buy over the counter, arrange privately or have at home. It is not used for muscle-invasive or metastatic bladder cancer.
- What supply gaps look like in practice — a postponed block, a reduced dose, a shortened maintenance schedule, or a switch to another intravesical option. Ask what your centre currently holds before you plan your dates.
- What CION does — treatment planning, tumour board review and second opinions on bladder cancer, and day-care administration of immunotherapy at our centres. Response-assessment PET-CT is coordinated at partner imaging centres rather than owned by us.
- What to ask, plainly — where would my instillations be done, who supervises them, do you have stock for the whole induction block, and what happens to my schedule if you run out.
Costs vary by centre, by supply and by how much of the course you complete. Any figure quoted to you is indicative only, as of August 2026. If your centre has told you BCG is unavailable, what to do if BCG is unavailable sets out the options teams actually use.
Related Reading
Where to go next from here
- Side Effects of BCG Bladder Treatment — what is expected, what settles on its own, and the fever pattern that needs same-day attention.
- BCG Shortage: What to Do If It Is Unavailable — how teams handle a supply gap, and what it means for your schedule.
- BCG Therapy for Bladder Cancer: How It Works — the mechanism behind the instillation, and who the treatment is usually offered to.
- How to Tell Real Immunotherapy From an Unproven Treatment — the checks worth making before paying for anything sold as an immune therapy.
- Immunotherapy at CION Cancer Clinics — the hub page: biomarker testing, day-care administration, monitoring and support in one place.
This page describes a treatment procedure from a scientific standpoint. It is general information, not a treatment recommendation, and not a substitute for consultation with your own urologist and oncologist. No brand, product or manufacturer is named or endorsed here, and no claim is made about how well this or any other treatment works. Immunotherapy is administered as day care at CION centres; response-assessment PET-CT is coordinated at partner imaging centres. CION does not provide CAR-T or cell therapy. Any cost mentioned is indicative only, as of August 2026. Only your treating team, reviewing your complete case, can say whether any of this applies to you.
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Common questions
BCG bladder instillation: your questions answered
How is BCG given for bladder cancer?
Through a thin, soft catheter passed into the bladder. About 50 ml of BCG in saline is instilled, the catheter is taken out straight away, and the liquid stays in the bladder for roughly two hours before you pass it out. There is no injection into a vein, no drip stand and no admission. The instillation itself takes only a few minutes; the two-hour hold is what makes the visit long. Your urine is checked before every dose, and a dose is postponed rather than pushed through if there is an infection, fresh bleeding or a difficult catheter insertion.
How many BCG instillations will I need?
Six to begin with, one a week for six weeks, usually starting two to four weeks after the tumour has been removed. That block is called induction. Most people then continue with maintenance, which is typically three weekly instillations repeated at intervals over the following months. In current NCCN and ESMO guidance, maintenance runs for about one year in intermediate-risk disease and up to three years in high-risk disease, alongside regular cystoscopy checks. Doses are sometimes delayed, reduced or stopped depending on how you tolerate them, and your urologist makes that call each time.
What does a BCG instillation feel like?
The catheter is uncomfortable rather than painful for most people, and it is over in well under a minute. Lubricating gel with a local anaesthetic is used. The liquid feels cold going in, and then you feel increasingly full. Holding it for two hours is the part most people find hardest. Afterwards, burning while passing urine and a strong urge to go are common for a day or two, and aching or a mild fever can follow the same evening. The first two or three doses are usually easy, and symptoms tend to build from the third or fourth.
What if I cannot hold the BCG for two hours?
Tell your team rather than forcing it. Two hours is the aim because that is the contact time the bladder lining is meant to get, but a shorter hold is far better than a distressing one, and later doses in a course are often harder to hold. Your team can adjust the volume or the target time. Passing the liquid out early is not a failure and it is not dangerous. Sit down to pass urine, follow the toilet precautions you were given for the next six hours, and tell the nurse or urologist what happened before your next dose.
Can I go to work after a BCG instillation?
Many people do. There is no sedation and no needle, so you can drive yourself and return to ordinary activity once the liquid has been passed. Plan for the two-hour hold, though, and for going to the toilet often for the rest of that day. If your work makes frequent toilet breaks difficult, book the appointment on a lighter day. Tiredness, aching and a mild fever that evening are common, so avoid a demanding night. If burning or urgency is severe enough to disturb your day, say so before the next dose.
Is BCG available in India, and what happens if my centre has none?
BCG is manufactured in India and India is among the largest producers in the world, yet supply has been unreliable globally for more than a decade and Indian centres have been affected too. Not every hospital runs a bladder instillation service, so where your doses are given may depend on which urology unit is near you. During a shortage, teams may use a reduced dose, shorten the maintenance schedule, prioritise higher-risk patients or use a different intravesical treatment. Ask your treating team directly what they have, what they would use instead and how that changes your schedule.