Drug interactions
Ponesimod + Siponimod
Severity: Contraindicated
Ponesimod and Siponimod: contraindicated 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 sphingosine-1-phosphate receptor modulators with the same class effects, including heart rate reduction and immunosuppression. Using them together adds no established benefit and increases the risk of bradyarrhythmia and infection.
What this interaction means in plain words
Ponesimod and Siponimod are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Ponesimod belongs to Central Nervous System; Siponimod belongs to Central Nervous System.
Why it happens
Duplicate S1P receptor modulation produces additive effects on heart rate, AV conduction and lymphocyte reduction.
What to do
Do not combine these drugs. When switching between them, stop one and allow for its washout and lymphocyte recovery before starting the other, as advised in labeling.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Siponimod
- Cladribine + Siponimod Contraindicated
- Fingolimod + Siponimod Contraindicated
- Fluconazole + Siponimod Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Siponimod Contraindicated
- Siponimod + Thioridazine Contraindicated
- Adenovirus types 4 and 7 live + Siponimod Major
Other interactions of Ponesimod
- Fingolimod + Ponesimod Contraindicated
- Amiodarone + Ponesimod Major
- Amisulpride + Ponesimod Major
- Anagrelide + Ponesimod Major
- Anti-thymocyte + Ponesimod Major
- Asenapine + Ponesimod Major
Frequently asked questions
Can I take Ponesimod with Siponimod?
MediHelp rates the interaction as contraindicated. Ponesimod and Siponimod are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both are sphingosine-1-phosphate receptor modulators with the same class effects, including heart rate reduction and immunosuppression. Using them together adds no established benefit and increases the risk of bradyarrhythmia and infection.
How serious is the interaction between Ponesimod and Siponimod?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not combine these drugs. When switching between them, stop one and allow for its washout and lymphocyte recovery before starting the other, as advised in labeling.
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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