Drug interactions of Valcyte

In vivo drug-drug interaction studies were not conducted with valganciclovir. However, because valganciclovir is rapidly  and extensively converted to ganciclovir, drug-drug interactions associated with ganciclovir will be expected for Valcyte. Drug-drug interaction studies with ganciclovir were conducted in patients with normal renal function.  Following concomitant administration of Valcyte and other renally excreted drugs, patients with impaired renal function may have increased concentrations of ganciclovir and the coadministered drug. Therefore, these patients should be closely  monitored for toxicity of ganciclovir and the coadministered drug.

Established and other potentially significant drug interactions conducted with ganciclovir are listed in Table 9.

from FDA,2021.12