Drug	Dosage	Cost per episode*
Acyclovir (Zovirax)	200 mg 5 times daily for 5 days	$32 (24–27)
	800 mg twice daily for 5 days	49 (36–40)
Famciclovir (Famvir)	125 mg twice daily for 5 days	28
Valacyclovir (Valtrex)	500 mg twice daily for 5 days	30