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Chemotherapy: what to expect
Bleomycin (Bleocip): Lung Risk and What Lasts a Lifetime
Medically reviewed by Dr. N. Kiranmayee, Medical Oncologist · Last reviewed September 2026
Bleomycin is used in some lymphomas and testicular cancers. Its main risk is to the lungs — a risk that builds with every dose and leaves a permanent caution about oxygen that you must tell every future anaesthetist about.
Bleomycin is a prescription-only medicine, given only under the supervision of a specialist oncologist in a clinical setting. Nothing on this page can be used to start, adjust, or continue treatment — those decisions rest entirely with your prescribing doctor. It is not suitable for everyone — see who this is not for below.
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Bleomycin (Bleocip) is a chemotherapy medicine used in certain lymphomas and testicular cancers. Its main risk is pulmonary toxicity — inflammation or scarring of the lungs — which builds with cumulative dose and can appear during or after treatment. A new dry cough or breathlessness must be reported to your team the same day, not at your next appointment.
Step by step
What happens during a course of bleomycin treatment?
Before your first dose, your team will check your lung function with a breathing test and take blood tests that include kidney function. These establish your baseline and confirm it is safe to start.
The first dose is given slowly, with a period of observation afterwards. Fever and chills are common early reactions to bleomycin. Your team will watch for these and manage them at the time.
Subsequent doses are given as day care — you attend, receive the medicine, and go home the same day. Bleomycin may be given by injection or infusion depending on your regimen.
Your team will ask about any new cough or breathlessness at each visit. Repeat lung function tests may be arranged to confirm your lungs are tolerating the medicine.
Your team records the total dose of bleomycin you receive across all cycles. Treatment is stopped or adjusted if the running total approaches the threshold where lung risk rises significantly.
In detail
What is the lung risk with bleomycin?
Bleomycin can inflame the lining of the lungs — a reaction called bleomycin-induced pneumonitis. In some cases this progresses to fibrosis, where lung tissue becomes scarred and less flexible.
The symptoms to report the same day are a new dry cough, breathlessness that is getting worse, or a fever alongside either of those. These are not ordinary side effects to push through. They may be early signs that your lungs are reacting.
Lung toxicity can appear during treatment or after it ends. This is why your team continues to ask about your breathing even after bleomycin has stopped.
In detail
Why is there a lifetime dose limit?
Bleomycin accumulates in lung tissue. The risk of pulmonary toxicity is low at the doses used early in treatment and rises significantly as the cumulative total increases.
Because of this, there is a ceiling on how much bleomycin a person may receive over their entire lifetime — not just in one course of treatment. Your oncologist tracks this total and will stop bleomycin before that threshold is reached.
If you are ever offered bleomycin again years from now — by a different doctor, for a different diagnosis — they need to know the total you have already received. Carry a record of it, or ask your oncologist for a letter that states it.
Eligibility
Who is bleomycin not suitable for?
Bleomycin is not suitable for everyone, and eligibility is decided by an oncologist based on the individual case. Groups for whom it is typically not used include:
- People with existing significant lung disease, such as pulmonary fibrosis or severely reduced lung function on breathing tests
- Anyone who has previously experienced bleomycin-related lung toxicityA further course carries a high risk of serious and permanent harm
- People with severely reduced kidney function, because bleomycin is partly eliminated through the kidneys and cannot clear normally when kidney function is significantly impaired
- Those who are pregnant or may be pregnant, due to risk of harm to the developing baby
- Anyone whose cumulative lifetime dose has already reached the limit their oncologist has set
Your oncologist will assess your lung function and kidney function before bleomycin is prescribed and will continue to monitor both during treatment.
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In detail
Why must every future anaesthetist know you had bleomycin?
High concentrations of inhaled oxygen — the kind used routinely in general anaesthesia and intensive care — can trigger or worsen bleomycin-related lung damage. This risk does not disappear when treatment ends. It persists for years, and possibly for life.
Before any future surgery, dental procedure under sedation, or emergency admission, you must tell the anaesthetist and surgeon that you have had bleomycin. They will use the lowest safe oxygen concentration rather than the standard higher levels.
This is not a warning only for the period around your chemotherapy. It is a permanent change to how you should be managed under anaesthesia. Write it in your medical summary and tell every new treating doctor.
Worth knowing
Did you know?
The link between bleomycin and anaesthetic oxygen was recognised after patients who had tolerated treatment well developed serious lung problems during routine surgery shortly afterwards.
Anaesthetic teams now adjust oxygen delivery for patients with a bleomycin history — but only if they are told about it.
Source: ASCO Educational Resources on Chemotherapy-Related Toxicities; anaesthetic safety literature cited in ESMO clinical practice guidelines
Question by question
What other side effects can bleomycin cause?
Skin changes
Bleomycin commonly causes skin darkening, thickening, or peeling — particularly over the hands, elbows, knees, and at sites of previous pressure or injury. This is called cutaneous toxicity and tends to be more pronounced with higher cumulative doses. Tell your team about any skin changes you notice, even minor ones, so they can assess whether adjustment is needed.
Fever and chills after the first dose
A fever in the hours after the first dose of bleomycin is common and is not the same as an infection — it is a reaction to the medicine itself. Your team will monitor you after the initial dose and will have medicines ready to manage it at the time. Subsequent doses less commonly cause this reaction, though it can recur, so continue to report any fever you develop after a dose.
Mouth sores (mucositis)
Bleomycin can cause sores on the inside of the mouth, lips, and throat, particularly with repeated doses. Gentle rinsing with a salt or bicarbonate solution helps reduce the severity. Tell your team if eating or drinking becomes difficult, or if you develop pain that is making it hard to take fluids — this needs prompt review rather than home management alone.
Raynaud's phenomenon
Some people develop Raynaud's phenomenon during or after bleomycin — the fingers or toes turn white or blue in the cold because of narrowing of the blood vessels. Wearing warm gloves outdoors in cool weather helps significantly. Tell your team if it is happening, because they will record it in your notes and advise on managing it. Future treating doctors also need to know.
Hair thinning
Bleomycin causes less hair loss than many other chemotherapy medicines. In the combination regimens where bleomycin is most often used, the other drugs in the regimen are usually more responsible for hair thinning than bleomycin itself. Ask your team which medicines in your specific regimen are most likely to cause hair changes, so you have an accurate picture of what to expect.
Nausea
Nausea with bleomycin is generally mild compared to many other chemotherapy agents. Your team will prescribe anti-nausea medicines for you to take alongside treatment. If nausea is making it hard to eat or drink in the days after a dose, raise it at your next visit — it is manageable and does not have to be endured in silence.
Common questions
Frequently asked questions
What does bleomycin treat?
Bleomycin is used in certain lymphomas — particularly Hodgkin lymphoma as part of a combination regimen — and in testicular germ cell tumours. It is also used in some cases of head and neck cancer and to manage malignant pleural effusions. Whether it is the right medicine for your diagnosis depends on your specific cancer type, stage, and overall fitness, and that is your oncologist's decision rather than something the diagnosis label alone determines.
How will my team know if my lungs are being affected?
Your team will ask about any new cough or breathlessness at each visit. They may also arrange repeat breathing tests — particularly a measurement called DLCO, which tests how efficiently the lungs transfer gas — at intervals during treatment. If your results change significantly, or if you report symptoms, they will assess whether bleomycin should be paused or stopped. Do not wait for a scheduled visit if your breathing changes — call the same day.
Is the lung damage permanent?
It depends on how early it is caught and how severe it becomes. Mild inflammation identified early often improves once bleomycin is stopped and, in some cases, after a course of steroids. More severe or established fibrosis — where scar tissue has formed — tends to be permanent. This is why reporting symptoms early matters. The earlier the reaction is identified, the more options your team has to manage it.
Do I need to carry a card or document about the oxygen caution?
Yes, and many oncology teams provide a letter or card for exactly this purpose. If you have not been given one, ask your oncologist to document your bleomycin history in a letter you can carry. In an emergency you may not be able to speak for yourself, and having something written down that an anaesthetist or emergency doctor can read quickly is genuinely important — not just a formality.
Can I fly after having bleomycin?
Aircraft cabins are pressurised to a level where the effective oxygen concentration is somewhat lower than at ground level. For most people who have received bleomycin without lung complications, flying is not specifically contraindicated, but this is a question to ask your oncologist before you travel — they know your lung function results and can answer based on your individual situation. If you were ever to need supplemental oxygen on a flight, discuss that with your team first.
What should I tell a doctor who does not know I had bleomycin?
Tell them you have received bleomycin chemotherapy and that you need the lowest safe concentration of oxygen if you ever require general anaesthesia, sedation, or supplemental oxygen. If you know the total cumulative dose you received, tell them that too — it helps them assess whether any future use would be safe. Bring any letters your oncologist has given you, and include bleomycin in your medical history at every new registration.
Who would be treating you
The medical oncologists on the CION panel
Chemotherapy is prescribed, dosed and supervised by a medical oncologist. These are the six on the CION panel.
Dr. Naresh Gundu
Medical OncologistMBBS · DNB Internal Medicine (Sir Gangaram, New Delhi) · DM Medical Oncology (AIIMS)
Dr. C. Raghavendra Reddy
Medical OncologistMBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Kukatpally
Dr. Bharati Devi Gorantla
Medical OncologistMBBS · MD · DM (Adyar, Chennai) · ECMO · MRCP SCE (UK)
Dr. T. Raghavender Reddy
Medical OncologistMBBS · DM (Medical Oncology) · MD (Radiation Oncology) · L.B. Nagar
Which oncologist you see depends on the centre nearest you and on what your treatment involves. Tell us where you are and we will point you to the closest.
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