Drug interactions
Cilastatin-imipenem + Ganciclovir
Severity: Major
Cilastatin-imipenem and Ganciclovir: 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
Generalized seizures have been reported in patients receiving ganciclovir together with imipenem-cilastatin. Both drugs can lower seizure threshold, particularly in renal impairment.
What this interaction means in plain words
Cilastatin-imipenem and Ganciclovir 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.
Cilastatin-imipenem belongs to Anti Bacterial; Ganciclovir belongs to Anti Virals.
Why it happens
The mechanism is not well established and is probably additive lowering of seizure threshold.
What to do
Avoid the combination unless the benefit clearly outweighs the risk, and consider a non-carbapenem antibiotic. If used, adjust doses for renal function and monitor for neurological toxicity.
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 Cilastatin-imipenem
Other interactions of Ganciclovir
Frequently asked questions
Can I take Cilastatin-imipenem with Ganciclovir?
MediHelp rates the interaction as major. Cilastatin-imipenem and Ganciclovir 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. Generalized seizures have been reported in patients receiving ganciclovir together with imipenem-cilastatin. Both drugs can lower seizure threshold, particularly in renal impairment.
How serious is the interaction between Cilastatin-imipenem and Ganciclovir?
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 the benefit clearly outweighs the risk, and consider a non-carbapenem antibiotic. If used, adjust doses for renal function and monitor for neurological toxicity.
What other medicines interact with Cilastatin-imipenem?
MediHelp also lists interactions of Cilastatin-imipenem with, for example, Divalproex, Valproic acid, Bcg intravesical live. The full list is on the Cilastatin-imipenem page.
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