Is Valtrex Safe During Pregnancy? Valacyclovir and Acyclovir Checks

What is the safest way to think about this?

MotherToBaby notes acyclovir and valacyclovir have been prescribed during pregnancy for primary genital herpes and some serious varicella-related situations. ACOG guidance covers genital herpes management in pregnancy, including delivery planning. The main is diagnosing the infection and matching treatment to pregnancy timing.

Checking a different medicine? The Pregnancy Medication Safety Hub collects all 154 SafeMama medicine guides, including the active-ingredient and dose questions worth raising with a pharmacist.

What is generally okay?

• Tell your obstetric clinician about genital herpes history, cold sores, shingles, or chickenpox exposure.
• Use valacyclovir only as prescribed, including any late-pregnancy suppression plan.
• Ask what symptoms require urgent care, especially fever, widespread rash, eye symptoms, or first-time genital outbreak.
• Ask how treatment affects delivery planning if you have genital lesions or prodromal symptoms near labor.

What should you avoid or double-check?

• Avoid self-treating a new rash or genital sore without diagnosis.
• Avoid skipping prescribed suppression near delivery if your clinician recommended it.
• Avoid sharing antiviral pills with someone else.
• Avoid assuming cold sore, genital herpes, shingles, and chickenpox exposure questions all use the same plan.

How SafeMama helps

SafeMama can identify valacyclovir, Valtrex, acyclovir, and Zovirax so users can discuss the exact antiviral with their clinician.

Open the SafeMama app, scan the barcode or search the ingredient, then use the result as a starting point for a conversation with your healthcare provider.

Sources

• MotherToBaby acyclovir and valacyclovir fact sheet
• ACOG management of genital herpes in pregnancy
• RCOG genital herpes in pregnancy guidance