Drug interactions
Edoxaban + Primidone
Severity: Major
Edoxaban and Primidone: 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
Primidone, through its metabolite phenobarbital, induces intestinal and hepatic drug transporters and enzymes and may lower edoxaban exposure. Reduced anticoagulant activity could raise the risk of stroke or venous thromboembolism.
What this interaction means in plain words
Edoxaban and Primidone 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.
Edoxaban belongs to Cardiovascular; Primidone belongs to Central Nervous System.
Why it happens
Induction of P-glycoprotein (and possibly other clearance pathways) lowers edoxaban absorption and increases its elimination.
What to do
Avoid the combination where possible and choose a non-inducing antiepileptic. If it cannot be avoided, monitor closely for thromboembolic events and consider an alternative anticoagulant.
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 Edoxaban
- Apixaban + Edoxaban Contraindicated
- Defibrotide + Edoxaban Contraindicated
- Edoxaban + Ketorolac Contraindicated
- Abciximab + Edoxaban Major
- Acetylsalicylic acid + Edoxaban Major
- Argatroban + Edoxaban Major
Other interactions of Primidone
- Lorlatinib + Primidone Contraindicated
- Lurasidone + Primidone Contraindicated
- Primidone + Ranolazine Contraindicated
- Primidone + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
- Primidone + Voriconazole Contraindicated
- Abiraterone + Primidone Major
Frequently asked questions
Can I take Edoxaban with Primidone?
MediHelp rates the interaction as major. Edoxaban and Primidone 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. Primidone, through its metabolite phenobarbital, induces intestinal and hepatic drug transporters and enzymes and may lower edoxaban exposure. Reduced anticoagulant activity could raise the risk of stroke or venous thromboembolism.
How serious is the interaction between Edoxaban and Primidone?
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 and choose a non-inducing antiepileptic. If it cannot be avoided, monitor closely for thromboembolic events and consider an alternative anticoagulant.
What other medicines interact with Edoxaban?
MediHelp also lists interactions of Edoxaban with, for example, Apixaban, Defibrotide, Ketorolac. The full list is on the Edoxaban page.
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