Drug interactions
Fluorouracil + Ropeginterferon alfa 2b
Severity: Major
Fluorouracil and Ropeginterferon alfa 2b: major interaction.
Last updated Sources: UK SmPC
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 can suppress bone marrow function, so combining them may cause deeper or more prolonged cytopenias than either alone. This raises the risk of infection, bleeding and anemia.
What this interaction means in plain words
Fluorouracil and Ropeginterferon alfa 2b 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.
Why it happens
Additive pharmacodynamic myelosuppression.
What to do
Avoid the combination where possible; if used, monitor complete blood counts frequently and reduce doses or interrupt therapy for significant cytopenias.
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?
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References
Other interactions of Fluorouracil
Frequently asked questions
Can I take Fluorouracil with Ropeginterferon alfa 2b?
MediHelp rates the interaction as major. Fluorouracil and Ropeginterferon alfa 2b 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. Both agents can suppress bone marrow function, so combining them may cause deeper or more prolonged cytopenias than either alone. This raises the risk of infection, bleeding and anemia.
How serious is the interaction between Fluorouracil and Ropeginterferon alfa 2b?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible; if used, monitor complete blood counts frequently and reduce doses or interrupt therapy for significant cytopenias.
What other medicines interact with Fluorouracil?
MediHelp also lists interactions of Fluorouracil with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Fluorouracil page.
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