Dosing & Administration
Adult Dose
HSV Genital: 400 mg PO TID for 7-10 days. VZV Shingles: 800 mg PO 5 times daily.
Pediatric Dose
VZV: 20 mg/kg PO QID for 5 days.
Renal Adjustment
CrCl < 25: Increase dosing interval. Ensure adequate hydration.
Hepatic Adjustment
No adjustment necessary.
Safety & Special Populations
Pregnancy Category
B
Lactation Safety
Compatible.
Contraindications & Adverse Effects
Contraindications
- Hypersensitivity
Common Adverse Effects
- Crystal nephropathy (if dehydrated, especially IV)
- Nausea
- Headache