Herpes simplex Adult Treatment: 200 mg 5 times daily for 5 days. Prophylaxis: 200 mg qds.
Herpes zoster & varicella Adult Treatment: 800 mg 5 times daily for 7 days.
Childn >6 yr 800 mg qds,
2-6 yr 400 mg qds,
<2 yr 200 mg qds. Max: 800 mg qds. Treatment duration: 5 days.