Drug interactions
Interferon alfa 2b + Ponesimod
Severity: Moderate
Interferon alfa 2b and Ponesimod: 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 affect the immune system, so combined use may increase the risk of infection. Ponesimod's lymphocyte-lowering effect persists for some time after discontinuation.
What this interaction means in plain words
Interferon alfa 2b and Ponesimod 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.
Interferon alfa 2b belongs to Anti Virals; Ponesimod belongs to Central Nervous System.
Why it happens
Additive immunosuppression via S1P receptor modulation (ponesimod) and interferon-related immune effects and myelosuppression.
What to do
Monitor for infections and check blood counts including lymphocytes. Consider the prolonged immune effects when switching between these agents.
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?
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Other interactions of Interferon alfa 2b
Other interactions of Ponesimod
- Fingolimod + Ponesimod Contraindicated
- Ponesimod + Siponimod Contraindicated
- Amiodarone + Ponesimod Major
- Amisulpride + Ponesimod Major
- Anagrelide + Ponesimod Major
- Anti-thymocyte + Ponesimod Major
Frequently asked questions
Can I take Interferon alfa 2b with Ponesimod?
MediHelp rates the interaction as moderate. Interferon alfa 2b and Ponesimod 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 affect the immune system, so combined use may increase the risk of infection. Ponesimod's lymphocyte-lowering effect persists for some time after discontinuation.
How serious is the interaction between Interferon alfa 2b and Ponesimod?
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 for infections and check blood counts including lymphocytes. Consider the prolonged immune effects when switching between these agents.
What other medicines interact with Interferon alfa 2b?
MediHelp also lists interactions of Interferon alfa 2b with, for example, Deferiprone, Hydroxycarbamide, Pexidartinib. The full list is on the Interferon alfa 2b page.
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