Drug interactions
Siponimod + Thalidomide
Severity: Moderate
Siponimod and Thalidomide: 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
Thalidomide can cause neutropenia and is associated with infections, particularly alongside other immunosuppressive treatment. Siponimod lowers lymphocytes, so combined use may increase infection risk.
What this interaction means in plain words
Siponimod and Thalidomide 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.
Siponimod belongs to Central Nervous System; Thalidomide belongs to Miscellaneous.
Why it happens
Additive immunomodulation and cytopenias from thalidomide plus S1P receptor-mediated lymphocyte sequestration.
What to do
Monitor blood counts and for infection during co-therapy. Reassess the need for siponimod if serious infection occurs.
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 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 Thalidomide
Frequently asked questions
Can I take Siponimod with Thalidomide?
MediHelp rates the interaction as moderate. Siponimod and Thalidomide 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. Thalidomide can cause neutropenia and is associated with infections, particularly alongside other immunosuppressive treatment. Siponimod lowers lymphocytes, so combined use may increase infection risk.
How serious is the interaction between Siponimod and Thalidomide?
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 and for infection during co-therapy. Reassess the need for siponimod if serious infection occurs.
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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