Drug interactions
Dexmedetomidine + Primidone
Severity: Moderate
Dexmedetomidine and Primidone: 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
Primidone is metabolized to phenobarbital and causes sedation. Combined with dexmedetomidine, sedation and hypotension may be additive.
What this interaction means in plain words
Dexmedetomidine and Primidone 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.
Dexmedetomidine belongs to Central Nervous System; Primidone belongs to Central Nervous System.
Why it happens
Additive CNS depression via barbiturate GABA-A potentiation and alpha-2 agonism.
What to do
Monitor sedation level and hemodynamics, and use lower dexmedetomidine doses with titration. Do not interrupt anticonvulsant therapy without specialist advice.
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 Dexmedetomidine
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 Dexmedetomidine with Primidone?
MediHelp rates the interaction as moderate. Dexmedetomidine and Primidone 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. Primidone is metabolized to phenobarbital and causes sedation. Combined with dexmedetomidine, sedation and hypotension may be additive.
How serious is the interaction between Dexmedetomidine and Primidone?
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 sedation level and hemodynamics, and use lower dexmedetomidine doses with titration. Do not interrupt anticonvulsant therapy without specialist advice.
What other medicines interact with Dexmedetomidine?
MediHelp also lists interactions of Dexmedetomidine with, for example, Buprenorphine long-acting, Calcium / magnesium / potassium / sodium oxybates, Dextromoramide. The full list is on the Dexmedetomidine page.
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