Study	Outcome
Wood, et al1 n=1076), meta-analysis	Acyclovir (Zovirax) 800 mg five times daily for seven days is better than placebo for resolution of pain
Beutner, et al2 (n=760), RCT	Valacyclovir (Valtrex) 1,000 mg three times daily for seven days is better than acyclovir 800 mg five times daily for seven days for resolution of pain.
Tyring, et al3 (n=419), RCT	Famciclovir (Famvir) 500 mg three times daily or 750 mg three times daily for seven days increases rate of lesion healing better than placebo.
Shen, et al4 (n=55), RCT	Famciclovir 250 mg three times daily for seven days is equal to acyclovir 800 mg five times daily for seven days for resolution of pain and rate of lesion healing.
Shafran, et al5 (n=559), RCT	Famciclovir 750 mg once daily for seven days, 500 mg twice daily for seven days, 250 mg three times daily for seven days, and acyclovir 800 mg five times daily for seven days are all equally effective for resolution of pain and rate of lesion healing.