Drug interactions
Divalproex + Meropenem / vaborbactam
Severity: Contraindicated
Divalproex and Meropenem / vaborbactam: contraindicated interaction.
Last updated Sources: US FDA label
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
Meropenem, like other carbapenems, can substantially lower serum valproic acid levels, which may precipitate breakthrough seizures. The effect begins quickly and may persist for days after the carbapenem is stopped.
What this interaction means in plain words
Divalproex and Meropenem / vaborbactam are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
Carbapenems are thought to inhibit hydrolysis of valproate glucuronide back to valproate and may also reduce valproate absorption and increase its clearance.
What to do
Avoid the combination and use a non-carbapenem antibiotic. If a carbapenem is necessary, add supplemental anticonvulsant therapy and monitor valproate levels.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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References
Frequently asked questions
Can I take Divalproex with Meropenem / vaborbactam?
MediHelp rates the interaction as contraindicated. Divalproex and Meropenem / vaborbactam are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Meropenem, like other carbapenems, can substantially lower serum valproic acid levels, which may precipitate breakthrough seizures. The effect begins quickly and may persist for days after the carbapenem is stopped.
How serious is the interaction between Divalproex and Meropenem / vaborbactam?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and use a non-carbapenem antibiotic. If a carbapenem is necessary, add supplemental anticonvulsant therapy and monitor valproate levels.
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