May 27 2022


There are no published studies on the influence of famciclovir during breastfeeding, so it is preferable to use other substances, especially in the case of small or premature infants.

Warning of the manufacturer:

It is unknown whether famciclovir (or penciclovir) is excreted in human breast milk. Animal studies have shown excretion of famciclovir/penciclovir in breast milk. Famciclovir should not be used during lactation.