Drug interactions
Ganciclovir + Imipenem / cilastatin / relebactam
Severity: Major
Ganciclovir and Imipenem / cilastatin / relebactam: 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
Imipenem-containing products can lower the seizure threshold, and seizures have been described when imipenem/cilastatin was given with ganciclovir. The same concern is expected with the relebactam combination because it contains imipenem.
What this interaction means in plain words
Ganciclovir and Imipenem / cilastatin / relebactam 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.
Why it happens
Probable additive lowering of the seizure threshold, extrapolated from imipenem; the exact mechanism is not established.
What to do
Avoid the combination unless there is no suitable alternative antibiotic. If used, dose both drugs for renal function and monitor for neurological symptoms.
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 Ganciclovir
Frequently asked questions
Can I take Ganciclovir with Imipenem / cilastatin / relebactam?
MediHelp rates the interaction as major. Ganciclovir and Imipenem / cilastatin / relebactam 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. Imipenem-containing products can lower the seizure threshold, and seizures have been described when imipenem/cilastatin was given with ganciclovir. The same concern is expected with the relebactam combination because it contains imipenem.
How serious is the interaction between Ganciclovir and Imipenem / cilastatin / relebactam?
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 unless there is no suitable alternative antibiotic. If used, dose both drugs for renal function and monitor for neurological symptoms.
What other medicines interact with Ganciclovir?
MediHelp also lists interactions of Ganciclovir with, for example, Bacitracin, Cilastatin-imipenem, Didanosine. The full list is on the Ganciclovir page.
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