See the DrugPatentWatch profile for famciclovir

After conducting a thorough investigation using the available resources, it appears that there is no definitive answer regarding the safety of Famciclovir for pregnant women, as clinical studies on this specific population are limited [1]. The manufacturer's prescribing information does not include data on pregnant women [2]. However, Famciclovir is classified as a pregnancy category B drug by the FDA, which means that animal studies have not shown a risk to the fetus, but there are no well-controlled studies in pregnant women [3].

It is crucial to consult with a healthcare provider before taking any medication during pregnancy, as they can evaluate the potential risks and benefits based on the individual's specific circumstances. They may consider the potential risk of the infection itself and the potential risk of the medication to the fetus when making a recommendation [4].

In summary, while there is no evidence of harm in animal studies, human studies are limited. Therefore, it is essential to consult a healthcare provider before taking Famciclovir during pregnancy.

Sources:

1. [Drugs.com](https://www.drugs.com/pregnancy/famciclovir.html)
2. Genovia (2016). Famvir (Famciclovir) Prescribing Information. [Online]. Available: [https://www.accessdata.fda.gov/drugsatfda\_docs/label/2016/020337s023lbl.pdf](https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/020337s023lbl.pdf)
3. [FDA](https://www.fda.gov/drugs/pregnancy-labeling/pregnancy-category-b-drugs)
4. [Mayo Clinic](https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/expert-answers/pregnancy-and-medications/faq-200580)