Ifosfamide is a chemotherapy drug — an alkylating agent and the close structural sibling of cyclophosphamide — used to treat sarcomas, testicular and other germ-cell cancers, lymphomas and several other malignancies. Like the rest of this family, it is a valuable cancer treatment, and it belongs in a bedroom atlas only because of what happens after a patient receives it: the drug is excreted and leaves traces on surfaces and bedding.

Is ifosfamide a carcinogen?

This is worth stating precisely, because it is often miscategorised. Ifosfamide is a genotoxic, NIOSH-listed hazardous drug and is handled with the same caution as other chemotherapy agents. But unlike its sibling cyclophosphamide — which is an IARC Group 1 known human carcinogen — ifosfamide has not been classified by IARC as a known or probable human carcinogen. So it should not be labelled a Group 1 carcinogen; the caution around it is based on its genotoxicity and hazardous-drug status, not a carcinogen classification.

Why does it matter in the bedroom?

Because patients excrete it. Studies have found ifosfamide on hospital surfaces — highest on the floors of patient bathrooms, tied to handling patients' urine — and detected it in the urine of nurses, sometimes from skin contact with contaminated surfaces rather than direct handling. Critically, changing the sheets or making the bed of a treated patient is one of the strongest predictors of picking up these drugs. In a home, that task falls to a family caregiver, which is why contaminated bedding and bathroom surfaces are the exposure to manage.

What should a caregiver do?

Follow the home-chemotherapy precautions from your care team, generally for about a week after each dose. Wear disposable gloves when handling soiled bedding, clothing or body fluids; launder contaminated linens separately from other washing with an extra rinse; close the toilet lid before flushing and clean bathroom surfaces; and wash hands afterward. The aim is to keep a caregiver's incidental exposure as low as reasonably achievable during the days the drug is being cleared.

Ifosfamide in the Bedroom

At a glance

Chemical family	An antineoplastic (chemotherapy) drug — an oxazaphosphorine alkylating agent and the structural sibling of cyclophosphamide
CAS number	3778-73-2
Classification	A NIOSH-listed hazardous drug; genotoxic. Not classified by IARC as a known or probable human carcinogen — unlike cyclophosphamide (Group 1). Often mislabelled "Group 1," which is incorrect for ifosfamide
Where you encounter it	Only in a home where someone is being treated: excreted in urine and other fluids, depositing on toilet/bathroom surfaces, bedding and laundry
Sleep micro-environment relevance	A household caregiver- and laundry-hygiene concern — contaminated bedding and surfaces, not the mattress — for a limited period after each dose
Activated carbon capture	Not relevant — a surface/laundry-residue issue managed by gloves, separate laundering and cleaning, not air filtration

What it is

Ifosfamide is an oxazaphosphorine alkylating agent — a chemotherapy drug that kills cancer cells by chemically cross-linking their DNA. It is the close structural relative of cyclophosphamide, and is used against sarcomas, testicular and other germ-cell tumours, lymphomas and a range of other cancers. As with everything in this family, it is first and foremost an important medicine.

Its place here rests on one precise point about classification. Ifosfamide is genotoxic and is listed by NIOSH as a hazardous drug requiring careful handling. Regulatory — NIOSH lists ifosfamide among hazardous antineoplastic drugs requiring safe-handling precautions But it has not been classified by IARC as a known or probable human carcinogen — a meaningful difference from cyclophosphamide, which is an IARC Group 1 carcinogen. Inferred — ifosfamide is absent from the IARC Group 1/2A/2B carcinogen lists that include cyclophosphamide; the common "Group 1" label is a misattribution and is corrected here Calling ifosfamide a "Group 1 carcinogen," as some summaries do, is simply wrong, and this Atlas does not repeat the error: the caution around it derives from its genotoxicity and hazardous-drug status, not a carcinogen classification.

How it relates to the bedroom

The household route: excretion onto surfaces and bedding

Ifosfamide reaches the sleep environment exactly as its siblings do — through the patient's excreta. Surface monitoring in hospitals has repeatedly found measurable ifosfamide (alongside cyclophosphamide) across patient areas, with the highest levels on the floors of patient lavatories, explicitly tied to the handling of patients' urine. Peer-reviewed — Hedmer et al. 2008 The drug is not only on surfaces but gets into people: in a study of oncology nurses, a third of those with internal contamination had ifosfamide in their urine, some of it attributable to skin contact with contaminated surfaces rather than direct drug handling. Peer-reviewed — Villa et al. 2021

And the single most relevant finding for a bedroom atlas: among the tasks that most strongly predicted picking up these drugs, changing the sheets or making the bed of a treated patient stood out. Peer-reviewed — Villa et al. 2023 In a home, that is the family caregiver's job — which is exactly the exposure this page exists to address.

Keeping it in proportion

The calibration is the same as for the rest of the family. Ifosfamide is a genotoxic hazardous drug, so reasonable precautions are warranted — but the documented third-party exposures are low-level traces, and the response is sensible hygiene rather than alarm. Inferred — household third-party exposure is low-level; precaution follows the ALARA principle The drug itself is doing essential work for the patient. The caregiver's task is to keep their own incidental contact as low as reasonably achievable during the short window after each dose.

What the research says

Not an IARC-classified carcinogen. Genotoxic and NIOSH-hazardous, but not Group 1 — unlike cyclophosphamide. Inferred — corrected from a common misattribution
Excreted and surface-deposited. Found on patient-lavatory floors, tied to handling of patients' urine. Peer-reviewed — Hedmer et al. 2008
Reaches people via surfaces. Detected in a third of internally-contaminated nurses, partly from skin contact. Peer-reviewed — Villa et al. 2021
Bedding is a real route. Sheet-changing/bed-making strongly associated with internal contamination. Peer-reviewed — Villa et al. 2023

What helps reduce it

Follow your care team's home-chemo precautions. Generally for about a week after each dose, designed for this situation. Inferred — standard home-chemotherapy caregiver guidance

Glove up and launder separately. Disposable gloves for soiled linens and fluids; wash contaminated bedding apart from other laundry with an extra rinse. Peer-reviewed — Villa et al. 2023

Manage the bathroom. Close the lid before flushing and clean surfaces — the documented hot spots for these drugs. Peer-reviewed — Hedmer et al. 2008

What does NOT help

Replacing the mattress. The drug is a transient excreted residue, not a bedding ingredient; hygiene and laundering address it. Inferred
Mislabelling it a Group 1 carcinogen. That overstates the classification; precautions rest on genotoxicity and hazardous-drug status. Inferred

Open research questions

The real magnitude of any health risk to home caregivers from low-level contact with excreted ifosfamide. Speculation
Whether ifosfamide's distinct toxicity profile (e.g. its neurotoxic and bladder effects in patients) has any relevance to low-level third-party exposure. Speculation

Citations

Hedmer M, et al. (2008). Environmental and biological monitoring of antineoplastic drugs in four workplaces in a Swedish hospital. Int. Arch. Occup. Environ. Health. Cyclophosphamide and ifosfamide on most surfaces; highest on patient-lavatory floors (up to 95 ng/cm²), tied to handling patients' urine. Via Consensus. Reference record Peer-reviewed
Villa A, et al. (2021). Nurses' internal contamination by antineoplastic drugs in hospital centers. Int. Arch. Occup. Environ. Health. 33.3% of internally-contaminated nurses had urinary ifosfamide; some from skin contact with contaminated surfaces. Via Consensus. Reference record Peer-reviewed
Villa A, et al. (2023). Factors associated with internal contamination of nurses by antineoplastic drugs. Int. J. Hyg. Environ. Health. Changing sheets / making the bed of a treated patient strongly associated with internal contamination (OR ~10). Via Consensus. Reference record Peer-reviewed

Frequently asked questions

What is ifosfamide?
Ifosfamide is a chemotherapy drug — an alkylating agent and the close structural sibling of cyclophosphamide — used to treat sarcomas, testicular and other germ-cell cancers, lymphomas and several other malignancies. Like the rest of this family, it is a valuable cancer treatment, and it belongs in a bedroom atlas only because of what happens after a patient receives it: the drug is excreted and leaves traces on surfaces and bedding.
Is ifosfamide a carcinogen?
This is worth stating precisely, because it is often miscategorised. Ifosfamide is a genotoxic, NIOSH-listed hazardous drug and is handled with the same caution as other chemotherapy agents. But unlike its sibling cyclophosphamide — which is an IARC Group 1 known human carcinogen — ifosfamide has not been classified by IARC as a known or probable human carcinogen. So it should not be labelled a Group 1 carcinogen; the caution around it is based on its genotoxicity and hazardous-drug status, not a carcinogen classification.
Why does it matter in the bedroom?
Because patients excrete it. Studies have found ifosfamide on hospital surfaces — highest on the floors of patient bathrooms, tied to handling patients' urine — and detected it in the urine of nurses, sometimes from skin contact with contaminated surfaces rather than direct handling. Critically, changing the sheets or making the bed of a treated patient is one of the strongest predictors of picking up these drugs. In a home, that task falls to a family caregiver, which is why contaminated bedding and bathroom surfaces are the exposure to manage.
What should a caregiver do?
Follow the home-chemotherapy precautions from your care team, generally for about a week after each dose. Wear disposable gloves when handling soiled bedding, clothing or body fluids; launder contaminated linens separately from other washing with an extra rinse; close the toilet lid before flushing and clean bathroom surfaces; and wash hands afterward. The aim is to keep a caregiver's incidental exposure as low as reasonably achievable during the days the drug is being cleared.

Related compounds

Embr is a sleep environment company researching and addressing the chemistry of the bedroom. Research and product development in progress. This page is informational and is not medical advice; follow your care team's guidance.

Last reviewed 2026-06-27. If you find a factual error, contact us.

Ifosfamide in the bedroom