Drug interactions
Apomorphine + Siponimod
Severity: Major
Apomorphine 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
Siponimod can cause bradycardia and conduction effects at treatment initiation. Apomorphine can prolong the QT interval, and the combination may raise the risk of torsades de pointes.
What this interaction means in plain words
Apomorphine 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.
Apomorphine belongs to Central Nervous System; Siponimod belongs to Central Nervous System.
Why it happens
Additive effects on cardiac repolarization and heart rate, with possible QT prolongation and bradycardia.
What to do
Avoid the combination where possible. If used, obtain a baseline ECG, correct potassium and magnesium, and monitor the ECG, especially during siponimod initiation.
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 Apomorphine
- Alosetron + Apomorphine Contraindicated
- Apomorphine + Cisapride Contraindicated
- Apomorphine + Dolasetron Contraindicated
- Apomorphine + Granisetron Contraindicated
- Apomorphine + Netupitant-palonosetron Contraindicated
- Apomorphine + Ondansetron Contraindicated
Frequently asked questions
Can I take Apomorphine with Siponimod?
MediHelp rates the interaction as major. Apomorphine 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. Siponimod can cause bradycardia and conduction effects at treatment initiation. Apomorphine can prolong the QT interval, and the combination may raise the risk of torsades de pointes.
How serious is the interaction between Apomorphine 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: Avoid the combination where possible. If used, obtain a baseline ECG, correct potassium and magnesium, and monitor the ECG, especially during siponimod initiation.
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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