Famvir and Breastfeeding
It is not known if Famvir® (famciclovir) passes through breast milk in humans. Therefore, let your healthcare provider know (prior to taking Famvir) if you are breastfeeding or thinking of breastfeeding.
In previous studies, Famvir was shown to pass through breast milk in rats. It is not known if it passes through breast milk in humans. If your healthcare provider recommends taking Famvir while breastfeeding, be sure to watch for any side effects in your child.
You should talk with your healthcare provider about Famvir and breastfeeding. Everyone's situation is different, and your healthcare provider understands your situation best. After considering what you want and expect (and your current health situation) you and your healthcare provider can make a shared decision about Famvir and breastfeeding for your particular situation.