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Drug interactions

Lomustine + Mycophenolate mofetil

Severity: Major

Lomustine and Mycophenolate mofetil: major 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

Lomustine causes delayed and cumulative myelosuppression, and mycophenolate also suppresses lymphocytes and neutrophils. Together they raise the risk of cytopenias and serious infections.

What this interaction means in plain words

Lomustine and Mycophenolate mofetil can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.

Lomustine belongs to Oncology; Mycophenolate mofetil belongs to Miscellaneous.

Evidence level: Moderate

Why it happens

Additive bone marrow suppression and immunosuppression.

What to do

Monitor complete blood counts frequently, including in the weeks after lomustine dosing, and watch for infection. Reduce or hold either drug for significant cytopenia, and consider prophylaxis per local protocols.

What to ask your pharmacist

  • Does the benefit of taking both outweigh the risk in my case?
  • Do I need any blood test, ECG or other check while on both?
  • What early warning signs should I watch for, and what should I do if they appear?

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 Lomustine with Mycophenolate mofetil?

MediHelp rates the interaction as major. Lomustine and Mycophenolate mofetil can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Lomustine causes delayed and cumulative myelosuppression, and mycophenolate also suppresses lymphocytes and neutrophils. Together they raise the risk of cytopenias and serious infections.

How serious is the interaction between Lomustine and Mycophenolate mofetil?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor complete blood counts frequently, including in the weeks after lomustine dosing, and watch for infection. Reduce or hold either drug for significant cytopenia, and consider prophylaxis per local protocols.

What other medicines interact with Mycophenolate mofetil?

MediHelp also lists interactions of Mycophenolate mofetil with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Mycophenolate mofetil page.

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