- Completion of 14-day course of intravenous ganciclovir induction therapy (2.5 mg/kg IV q8h or 5 mg/kg q12h for 14 days) or foscarnet induction therapy (60 mg/kg q8h adjusted for renal function for 14 days) within 1 week prior to study entry. Patients who do not initiate the study immediately upon completing ganciclovir induction therapy should receive a maintenance ganciclovir regimen of 5 mg/kg/day or 6 mg/kg/day 5 x week or a foscarnet regimen of 90-120 mg/kg/day until initiating study drug.