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Drug Interactions between ganciclovir and remdesivir

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

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Interactions between your drugs

Moderate

ganciclovir remdesivir

Applies to: ganciclovir and remdesivir

MONITOR: Coadministration of remdesivir with nephrotoxic agents may increase the plasma concentrations of its metabolites, GS-704277 and GS-441524, as well as the excipient, sulfobutylether-beta-cyclodextrin sodium (SBECD). Both GS-441524 and SBECD are primarily eliminated by the kidneys, thus renal impairment secondary to the use of nephrotoxic agents may reduce their clearance and increase the risk of accumulation. Exposures of GS-441524, GS-704277, and SBECD were up to 7.9-, 2.8-, and 21-fold higher, respectively, in adults with renal impairment compared to adults with normal renal function. However, these changes are not generally considered to be clinically significant. Safety data in pediatric patients with renal impairment is limited. Clinical data evaluating the use of remdesivir concurrently with another agent that causes nephrotoxicity are not available.

MANAGEMENT: Caution and additional monitoring may be advisable if remdesivir is used in patients who have recently received or are currently using potentially nephrotoxic agents. Some authorities recommend avoiding the concomitant use of remdesivir with drugs that can reduce renal function; as well as monitoring renal function prior to starting remdesivir and as clinically appropriate during treatment.

References (7)
  1. Gilead Sciences, Inc (2020) About Remdesivir. https://www.gilead.com/purpose/advancing-global-health/covid-19/about-remdesivir
  2. European Medicines Agency (2020) Summary on compassionate use. Remdesivir Gilead. https://www.ema.europa.eu/en/documents/other/summary-compassionate-use-remdesivir-gilead_en.pdf
  3. US Food and Drug Administration (2020) Fact sheet for health care providers emergency use authorization (EUA) of remdesivir (GS-5734TM) https://www.fda.gov/media/137566/download
  4. (2024) "Product Information. Veklury (remdesivir)." Gilead Sciences Pty Ltd, 7.0
  5. (2025) "Product Information. Veklury (remdesivir)." Gilead Sciences
  6. (2024) "Product Information. Veklury (remdesivir)." Gilead Sciences Canada Inc
  7. (2025) "Product Information. Veklury (remdesivir)." Gilead Sciences Ltd

Drug and food interactions

Moderate

ganciclovir food

Applies to: ganciclovir

ADJUST DOSING INTERVAL: Food delays but enhances the oral absorption and bioavailability of ganciclovir capsules, possibly due to prolongation of gastrointestinal transit time. In 20 HIV- and CMV-seropositive subjects, ganciclovir dosing (1000 mg every 8 hours) following a standardized high-fat breakfast increased the mean steady-state peak plasma concentration (Cmax) and area under the concentration-time curve (AUC) of ganciclovir by an average of 15% and 22%, respectively, compared to dosing after an overnight fast. The time to reach peak plasma concentration (Tmax) was prolonged from 1.8 to 3 hours. In another study of 15 such patients, administration of ganciclovir (2000 mg) within 30 minutes following a high-fat breakfast increased the Cmax and AUC an average of 111% and 114%, respectively, compared to administration in the fasting state (i.e. at least 1 hour before or 2 hours after a meal or snack). Over the total day of dosing (2000 mg orally three times a day), there was a mean increase of 48% and 97% in Cmax and AUC, respectively, and a 36% decrease in half-life during administration with meals.

MANAGEMENT: To ensure maximal oral absorption, oral ganciclovir should be administered with or immediately after a meal.

References (3)
  1. (2002) "Product Information. Cytovene (ganciclovir)." Genentech
  2. Lavelle J, Follansbee S, Trapnell CB, Buhles WC, Griffy KG, Jung D, Dorr A, Conner J (1996) "Effect of food on the relative bioavailability of oral ganciclovir." J Clin Pharmacol, 36, p. 238-41
  3. Jung D, Griffy K, Dorr A (1999) "Effect of food on high-dose oral ganciclovir disposition in HIV-positive subjects." J Clin Pharmacol, 39, p. 161-5

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.

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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

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