Drug interactions
Azacitidine + Siponimod
Severity: Major
Azacitidine and Siponimod: 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
Azacitidine is a hypomethylating agent that commonly causes neutropenia and thrombocytopenia, which adds to siponimod's lymphocyte reduction. The combined effect can raise the risk of serious infection.
What this interaction means in plain words
Azacitidine and Siponimod 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.
Azacitidine belongs to Oncology; Siponimod belongs to Central Nervous System.
Why it happens
Additive immunosuppression from myelosuppression by azacitidine and S1P receptor mediated lymphocyte sequestration by siponimod.
What to do
Avoid combining if possible; if used, monitor CBC with differential regularly and watch closely for infection. Consider suspending siponimod during myelosuppressive cycles.
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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Other interactions of Siponimod
- Cladribine + Siponimod Contraindicated
- Fingolimod + Siponimod Contraindicated
- Fluconazole + Siponimod Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Siponimod Contraindicated
- Ponesimod + Siponimod Contraindicated
- Siponimod + Thioridazine Contraindicated
Other interactions of Azacitidine
- Azacitidine + Fingolimod Major
- Azacitidine + Denosumab Moderate
- Azacitidine + Dichlorphenamide Moderate
- Azacitidine + Hydroxyurea Moderate
- Azacitidine + Trastuzumab Moderate
Frequently asked questions
Can I take Azacitidine with Siponimod?
MediHelp rates the interaction as major. Azacitidine and Siponimod 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. Azacitidine is a hypomethylating agent that commonly causes neutropenia and thrombocytopenia, which adds to siponimod's lymphocyte reduction. The combined effect can raise the risk of serious infection.
How serious is the interaction between Azacitidine and Siponimod?
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 combining if possible; if used, monitor CBC with differential regularly and watch closely for infection. Consider suspending siponimod during myelosuppressive cycles.
What other medicines interact with Siponimod?
MediHelp also lists interactions of Siponimod with, for example, Cladribine, Fingolimod, Fluconazole. The full list is on the Siponimod page.
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