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Drug interactions

Ifosfamide + Lomustine

Severity: Moderate

Ifosfamide and Lomustine: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Both agents are alkylating drugs that suppress bone marrow, with lomustine causing delayed and prolonged cytopenias. Combined use increases the risk of severe myelosuppression.

What this interaction means in plain words

Ifosfamide and Lomustine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Ifosfamide belongs to Oncology; Lomustine belongs to Oncology.

Evidence level: Moderate

Why it happens

Additive myelosuppression.

What to do

Monitor blood counts frequently, including at the later nadir associated with lomustine, and adjust doses accordingly.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Ifosfamide with Lomustine?

MediHelp rates the interaction as moderate. Ifosfamide and Lomustine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both agents are alkylating drugs that suppress bone marrow, with lomustine causing delayed and prolonged cytopenias. Combined use increases the risk of severe myelosuppression.

How serious is the interaction between Ifosfamide and Lomustine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood counts frequently, including at the later nadir associated with lomustine, and adjust doses accordingly.

What other medicines interact with Ifosfamide?

MediHelp also lists interactions of Ifosfamide with, for example, Adenovirus types 4 and 7 live, Measles mumps and rubella vaccine, Measles mumps and rubella vaccine live. The full list is on the Ifosfamide page.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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