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Drug Interactions between chloramphenicol and valganciclovir

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Major

chloramphenicol valGANciclovir

Applies to: chloramphenicol and valganciclovir

GENERALLY AVOID: Coadministration of chloramphenicol with other agents that can cause bone marrow depression, aplastic anemia, or agranulocytosis may increase the risk and/or severity of hematologic toxicity. Serious and fatal blood dyscrasias (aplastic anemia, hypoplastic anemia, thrombocytopenia, granulocytopenia, and bone marrow depression) have been reported after short-term and long-term systemic therapy with chloramphenicol.

MANAGEMENT: Concurrent use of chloramphenicol with other agents that can cause bone marrow depression, aplastic anemia, or agranulocytosis, such as sulfonamides, nucleoside reverse transcriptase inhibitors, procainamide, phenylbutazone, clozapine, and depot formulations of antipsychotic drugs, should be avoided.

References (4)
  1. (2002) "Product Information. Chloromycetin (chloramphenicol)." Parke-Davis
  2. (2022) "Product Information. Chloromycetin (chloramphenicol)." Pfizer Canada Inc
  3. (2015) "Product Information. Chloromycetin Succinate (chloramphenicol)." Link Medical Products Pty Ltd T/A Link Pharmaceuticals
  4. (2023) "Product Information. Chloramphenicol (chloramphenicol)." Eramol (UK) Ltd

Drug and food interactions

Moderate

valGANciclovir food

Applies to: valganciclovir

ADJUST DOSING INTERVAL: Food increases the bioavailability of ganciclovir from the prodrug, valganciclovir. In 16 HIV-positive subjects, the administration of valganciclovir 875 mg once daily with a high-fat meal containing approximately 600 calories resulted in a 30% increase in the steady-state area under the plasma concentration-time curve (AUC) and a 14% increase in the peak plasma concentration (Cmax) of ganciclovir, with no delay in the time to reach peak plasma concentration (Tmax). The mechanism is unknown.

MANAGEMENT: The manufacturer recommends that valganciclovir be taken with meals.

References (2)
  1. (2001) "Product Information. Valcyte (valganciclovir)." Roche Laboratories
  2. Brown F, Banken L, Saywell K, Arum I (1999) "Pharmacokinetics of valganciclovir and ganciclovir following multiple oral dosages of valganciclovir in HIV- and CMV-seropositiv volunteers." Clin Pharmacokinet, 37, p. 167-76

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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