Interactions médicamenteuses
Calcium / magnesium / potassium / sodium oxybates + Valproic acid
Gravité: Majeure
Calcium / magnesium / potassium / sodium oxybates and Valproic acid: major interaction.
Dernière mise à jour
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Résumé
Valproate increases oxybate exposure, which can intensify respiratory depression, sedation and coma. Oxybates already carry serious CNS and respiratory depressant risks.
Ce que signifie cette interaction, en termes simples
Calcium / magnesium / potassium / sodium oxybates and Valproic acid 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.
Pourquoi elle survient
Valproate inhibits GHB dehydrogenase and possibly monocarboxylate transporters, reducing oxybate clearance, with additive CNS depression.
Conduite à tenir
Reduce the nightly oxybate dose by at least 20% when valproate is started, or use a lower oxybate starting dose in patients already on valproate. Titrate by response and monitor for respiratory and CNS depression.
Questions à poser à votre pharmacien
- 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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Autres interactions de Valproic acid
- Ertapenem + Valproic acid Contre-indiquée
- Imipenem / cilastatin / relebactam + Valproic acid Contre-indiquée
- Imipenem / cilastatin + Valproic acid Contre-indiquée
- Meropenem / vaborbactam + Valproic acid Contre-indiquée
- Meropenem + Valproic acid Contre-indiquée
- Cilastatin-imipenem + Valproic acid Majeure
Questions fréquentes
Can I take Calcium / magnesium / potassium / sodium oxybates with Valproic acid?
MediHelp rates the interaction as major. Calcium / magnesium / potassium / sodium oxybates and Valproic acid 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. Valproate increases oxybate exposure, which can intensify respiratory depression, sedation and coma. Oxybates already carry serious CNS and respiratory depressant risks.
How serious is the interaction between Calcium / magnesium / potassium / sodium oxybates and Valproic acid?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reduce the nightly oxybate dose by at least 20% when valproate is started, or use a lower oxybate starting dose in patients already on valproate. Titrate by response and monitor for respiratory and CNS depression.
What other medicines interact with Valproic acid?
MediHelp also lists interactions of Valproic acid with, for example, Ertapenem, Imipenem / cilastatin / relebactam, Imipenem / cilastatin. The full list is on the Valproic acid page.
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