Drug interactions
Sertraline + Siponimod
Severity: Moderate
Sertraline 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
Sertraline is a weak to moderate CYP3A4 inhibitor and may modestly raise siponimod exposure, which is mainly cleared by CYP2C9 and CYP3A4. Both drugs may also affect cardiac conduction, with siponimod causing bradycardia and sertraline mildly prolonging QTc.
What this interaction means in plain words
Sertraline 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.
Sertraline belongs to Central Nervous System; Siponimod belongs to Central Nervous System.
Why it happens
Partial CYP3A4 inhibition by sertraline increasing siponimod levels, plus additive effects on heart rate and QTc.
What to do
Confirm the patient's CYP2C9 genotype per siponimod labeling and obtain a baseline ECG. Monitor heart rate and QTc during treatment initiation and avoid adding other CYP2C9 inhibitors.
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 Sertraline
- Isocarboxazid + Sertraline Contraindicated
- Methylene blue + Sertraline Contraindicated
- Phenelzine + Sertraline Contraindicated
- Pimozide + Sertraline Contraindicated
- Selegiline transdermal + Sertraline Contraindicated
- Selegiline + Sertraline Contraindicated
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
Frequently asked questions
Can I take Sertraline with Siponimod?
MediHelp rates the interaction as moderate. Sertraline 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. Sertraline is a weak to moderate CYP3A4 inhibitor and may modestly raise siponimod exposure, which is mainly cleared by CYP2C9 and CYP3A4. Both drugs may also affect cardiac conduction, with siponimod causing bradycardia and sertraline mildly prolonging QTc.
How serious is the interaction between Sertraline 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: Confirm the patient's CYP2C9 genotype per siponimod labeling and obtain a baseline ECG. Monitor heart rate and QTc during treatment initiation and avoid adding other CYP2C9 inhibitors.
What other medicines interact with Sertraline?
MediHelp also lists interactions of Sertraline with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Sertraline page.
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