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Does Cilastatin Interact with Valganciclovir?

CDI records a moderate classification for Cilastatin and Valganciclovir. The stored summary is: Table 9 Established and Other Potentially Significant Drug Interactions with Ganciclovir Name of the Concomitant Drug Change in the Concentration of Ganciclovir or Concomitant Drug Clinical Comment Imipenem-cilastatin Unknown Coadministration with imipenemcilastatin is not recommended because generalized seizures have been reported in patients who received ganciclovir and imipenemcilastatin Cyclosporine or amphotericin B Unknown Monitor renal function when Valganciclovir hydrochloride is coadministered with cyclosporine or amphotericin B because of potential increase in serum creatinine [see Warningsand Precautions (5.2) ]. Imipenem-cilastatin: Seizures were reported in patients receiving ganciclovir and imipenem-cilastatin. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.

Severity: Moderate
Valganciclovir Class: Cytomegalovirus Nucleoside Analog DNA Polymerase Inhibitor
Management: Monitor for effects
Data Source: U.S. FDA via OpenFDA

What To Tell Your Doctor or Pharmacist

If you are taking Cilastatin and your doctor is considering prescribing Valganciclovir (or vice versa), make sure to:

Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
Ask whether the benefits of combining these medications outweigh the risks for your specific situation
Ask what symptoms to watch for that would indicate the interaction is causing problems
Ask whether any dosage adjustments are needed
Never stop or change either medication without first consulting your healthcare provider

💊 Cilastatin(Recarbrio)+💊 Valganciclovir(Valcyte)

Severity & Interaction Details

🟡

moderate

Be aware — moderate interaction

Documented interaction with manageable risk. May require dose adjustment or monitoring.

Severity scale

MinorContra

On record

Yes

Drug A class

—

Drug B class

Cytomegalovirus Nucleoside Analog DNA Polymerase Inhibitor

Source

FDA drug label - valganciclovir

What this means in plain English

Table 9 Established and Other Potentially Significant Drug Interactions with Ganciclovir Name of the Concomitant Drug Change in the Concentration of Ganciclovir or Concomitant Drug Clinical Comment Imipenem-cilastatin Unknown Coadministration with imipenemcilastatin is not recommended because generalized seizures have been reported in patients who received ganciclovir and imipenemcilastatin Cyclosporine or amphotericin B Unknown Monitor renal function when Valganciclovir hydrochloride is coadministered with cyclosporine or amphotericin B because of potential increase in serum creatinine [see Warningsand Precautions (5.2) ]. Imipenem-cilastatin: Seizures were reported in patients receiving ganciclovir and imipenem-cilastatin.

About Cilastatin and Valganciclovir

Valganciclovir is a Cytomegalovirus Nucleoside Analog DNA Polymerase Inhibitor. You may recognize them by the brand names Recarbrio and Valcyte. Valganciclovir additionally carries an FDA boxed warning, the FDA's strongest safety alert.

Source and Limitations

This record was produced by automated extraction from drug-label information, including AI processing. The summary and mechanism are not verbatim FDA quotations. The drug profiles below may describe different formulations from the source label. Confirm the exact product and route with your pharmacist. This page does not establish independent clinical review.

📖 Source: FDA drug label - valganciclovir

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How this information is prepared: CDI uses automated extraction, including AI, to summarize drug labeling from openFDA and includes separately identified curated-reference records. RxNorm helps identify medications; it does not verify interaction claims. Extracted summaries and CDI severity classifications can contain errors and are not verbatim FDA statements or independent clinical review. Maintained by CheckDrugInteractions.com. See our methodology or report a correction at support@checkdruginteractions.com.

Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine, supplemented with a small number of well-established interactions from curated clinical references. For informational purposes only. Always consult your pharmacist or physician.