Drug interactions
Cenobamate + Siponimod
Severity: Moderate
Cenobamate and Siponimod: 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
Cenobamate induces CYP3A4 and may also affect CYP2C19, while siponimod is cleared by CYP2C9 and CYP3A4. Exposure to siponimod may fall, reducing its effectiveness. Because of the CYP2C9 pathway, the effect is probably modest.
What this interaction means in plain words
Cenobamate and Siponimod 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.
Cenobamate belongs to Central Nervous System; Siponimod belongs to Central Nervous System.
Why it happens
Cenobamate induces CYP3A4, increasing siponimod metabolism.
What to do
Monitor clinical response to siponimod, such as MS disease activity. Siponimod labeling advises against use with combined moderate CYP2C9 and CYP3A4 inducers, so consider the patient's CYP2C9 genotype.
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 Cenobamate
Frequently asked questions
Can I take Cenobamate with Siponimod?
MediHelp rates the interaction as moderate. Cenobamate and Siponimod 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. Cenobamate induces CYP3A4 and may also affect CYP2C19, while siponimod is cleared by CYP2C9 and CYP3A4. Exposure to siponimod may fall, reducing its effectiveness. Because of the CYP2C9 pathway, the effect is probably modest.
How serious is the interaction between Cenobamate and Siponimod?
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 clinical response to siponimod, such as MS disease activity. Siponimod labeling advises against use with combined moderate CYP2C9 and CYP3A4 inducers, so consider the patient's CYP2C9 genotype.
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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