VALCYTE

Valganciclovir is a prodrug of ganciclovir. Valganciclovir C max and AUC are approximately 1% and 3% of those of ganciclovir, respectively. Pharmacokinetics in Adults: The pharmacokinetics of ganciclovir after administration of valganciclovir tablets have been evaluated in HIV- and CMV-seropositive patients, patients with AIDS and CMV retinitis, and in solid organ transplant patients ( Table 10 ).

Table 10Ganciclovir Pharmacokinetics Data were obtained from single and multiple dose studies in h...

14.1 Adult Patients Induction Therapy of CMV Retinitis: In one randomized open-label controlled study, 160 patients with AIDS and newly diagnosed CMV retinitis were randomized to receive treatment with either VALCYTE tablets (900 mg twice daily for 21 days, then 900 mg once daily for 7 days) or with intravenous ganciclovir solution (5 mg per kg twice daily for 21 days, then 5 mg per kg once daily for 7 days). Study participants were: male (91%), White (53%), Hispanic (31%), and Black (11%). The median age was 39 years, the median baseline HIV-1 RNA was 4.9 log 10 , and the median CD4 cell coun...

The following serious adverse reactions are discussed in greater detail in other sections of the labeling: Hematologic Toxicity [see Warnings and Precautions (5.1) ] . Acute Renal Failure [see Warnings and Precautions (5.2) ] . Impairment of Fertility [see Warnings and Precautions (5.3) ] . Fetal Toxicity [see Warnings and Precautions (5.4) ] . Mutagenesis and Carcinogenesis [see Warnings and Precautions (5.5) ] . The most common adverse reactions and laboratory abnormalities reported in at leas...

VALCYTE is contraindicated in patients who have had a demonstrated clinically significant hypersensitivity reaction (e.g., anaphylaxis) to valganciclovir, ganciclovir, or any component of the formulation [see Adverse Reactions (6.1) ]. Hypersensitivity to valganciclovir or ganciclovir. ( 4 )

Acute renal failure: Acute renal failure may occur in elderly patients (with or without reduced renal function), patients who receive concomitant nephrotoxic drugs, or inadequately hydrated patients. Use with caution in elderly patients or those taking nephrotoxic drugs, reduce dosage in patients with renal impairment, and monitor renal function. ( 2.5 , 5.2 , 8.5 , 8.6 ) 5.1 Hematologic Toxicity Severe leukopenia, neutropenia, anemia, thrombocytopenia, pancytopenia, and bone marrow failure incl...

7 DRUG INTERACTIONS 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 administrati...