Screening Inclusion Criteria:

• Women 18-40 years of age at the time of screening
• Willing to be screened for HSV-2 using a rapid, FDA approved test
• Using an effective method of birth control (examples of effective methods of birth control are: women practicing abstinence x 90 days, hormonal birth control, consistent condom use, bilateral tubal ligation, partner with a vasectomy)

Screening Exclusion Criteria:

• Pregnant or nursing mother
• Use of any antimicrobial agents (vaginal or systemic) for the treatment of any condition within 7 days
• Presence of any intrauterine device
• Allergy or hypersensitivity to valcyclovir or nucleoside analogues

Enrollment Inclusion Criteria:

• Women 18-40 Years of age at the time of screening
• HSV-2 seropositive as determined by rapid HSV-2 testing
• Using an effective method of birth control (examples of effective methods of birth control are: women practicing abstinence x 90 days, hormonal birth control, consistent condom use, bilateral tubal ligation, partner with a vasectomy)
• Willing to avoid use of any intravaginal products during study period
• Capable of providing written informed consent
• Capable of cooperating to the extent and degree required by this protocol

Enrollment Exclusion Criteria:

• Pregnancy (all women will have a urine pregnancy test prior to randomization and treatment)
• nursing mother
• Menopausal women
• Use of any antimicrobial agents (vaginal or systemic) for the treatment of any condition within 7 days of study enrollment
• Known immunocompromised state
• Significant Medical disorder that precludes accurate evaluation of participants condition
• Presence of any intrauterine device
• History of significant hepatic or renal impairment
• Sensitivity/allergy to valacyclovir or nucleoside analogues
• history of acyclovir or valacyclovir resistant HSV infection
• Participation in a study using an investigational product in the past 30 days