Drug interactions
Ozanimod + Siponimod
Severity: Major
Ozanimod 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
Both are S1P receptor modulators that reduce circulating lymphocytes and slow heart rate. Using them together duplicates therapy and adds to infection and bradycardia risk without established benefit.
What this interaction means in plain words
Ozanimod 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.
Ozanimod belongs to Central Nervous System; Siponimod belongs to Central Nervous System.
Why it happens
Duplicate S1P receptor modulation with additive lymphocyte sequestration and heart-rate effects.
What to do
Do not use the two concurrently. When switching, allow for washout and reassess lymphocyte counts and heart rate before starting the second agent.
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 Ozanimod
- Isocarboxazid + Ozanimod Contraindicated
- Linezolid + Ozanimod Contraindicated
- Ozanimod + Phenelzine Contraindicated
- Ozanimod + Procarbazine Contraindicated
- Ozanimod + Rasagiline Contraindicated
- Ozanimod + Safinamide Contraindicated
Frequently asked questions
Can I take Ozanimod with Siponimod?
MediHelp rates the interaction as major. Ozanimod 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. Both are S1P receptor modulators that reduce circulating lymphocytes and slow heart rate. Using them together duplicates therapy and adds to infection and bradycardia risk without established benefit.
How serious is the interaction between Ozanimod 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: Do not use the two concurrently. When switching, allow for washout and reassess lymphocyte counts and heart rate before starting the second agent.
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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