When it comes to treating viral infections during pregnancy, famciclovir is not always the first line of treatment due to its limited safety data [1]. According to the FDA, famciclovir's safety and efficacy in pregnant women have not been established [2].
For pregnant women with herpes simplex virus (HSV) or varicella-zoster virus (VZV) infections, safer alternative treatments can be prescribed. For recurrent genital herpes, valacyclovir (Valtrex) may be a suitable alternative to famciclovir [3]. Valacyclovir is a prodrug of acyclovir, which is an antiviral medication that has been extensively studied for use in pregnant women [4].
Another option for treating HSV or VZV infections during pregnancy is acyclovir (Zovirax) itself [5]. Acyclovir has been used for decades to treat viral infections in pregnant women, and its safety profile is well established [6]. The American College of Obstetricians and Gynecologists (ACOG) recommends acyclovir as a first-line treatment for HSV infections during pregnancy [7].
For women with a history of shingles (caused by VZV), famciclovir may be an option if other treatment alternatives are not available. However, valacyclovir or acyclovir may be considered safer alternatives in some cases [8].
It's essential to note that any medication should only be prescribed by a healthcare provider, taking into account the individual's medical needs and circumstances. Pregnant women should always consult their healthcare provider before taking any medication, including antiviral medications.
Sources:
[1] https://www.drugpatentwatch.com/famciclovir
[2] https://www.fda.gov/drugs/drug-approvals-and-databases/famciclovir-fda-label
[3] https://www.drugpatentwatch.com/valacyclovir
[4] https://www.medscape.com/viewarticle/821419
[5] https://www.drugpatentwatch.com/acyclovir
[6] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2938765
[7] https://www.acog.org/clinical/clinical-guidance/committee-opinion/article/2007/09/treatment-of-genital-herpes-in-pregnancy
[8] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2938765