Drug interactions
Siponimod + Topotecan
Severity: Moderate
Siponimod and Topotecan: 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
Topotecan causes dose-dependent myelosuppression, and siponimod reduces peripheral lymphocytes. Combined use may deepen cytopenias and increase infection risk.
What this interaction means in plain words
Siponimod and Topotecan 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; Topotecan belongs to Oncology.
Why it happens
Additive effects: S1P receptor-mediated lymphocyte sequestration plus topoisomerase I inhibitor bone marrow suppression.
What to do
Monitor complete blood counts with differential and watch for infection. Consider interrupting siponimod during myelosuppressive chemotherapy cycles.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Siponimod and Topotecan, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
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 Topotecan
- Adenovirus types 4 and 7 live + Topotecan Contraindicated
- Amiodarone + Topotecan Major
- Cisplatin + Topotecan Major
- Cobicistat + Topotecan Major
- Cyclosporine + Topotecan Major
- Cyclosporin + Topotecan Major
Frequently asked questions
Can I take Siponimod with Topotecan?
MediHelp rates the interaction as moderate. Siponimod and Topotecan 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. Topotecan causes dose-dependent myelosuppression, and siponimod reduces peripheral lymphocytes. Combined use may deepen cytopenias and increase infection risk.
How serious is the interaction between Siponimod and Topotecan?
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 complete blood counts with differential and watch for infection. Consider interrupting siponimod during myelosuppressive chemotherapy 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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
