Pregnancy: Tenofovir disoproxil fumarate should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Given that the potential risks to the developing fetus are unknown, the use of tenofovir disoproxil fumarate in women of childbearing potential must be accompanied by the use of effective contraception.
Nursing Mothers: It is not known whether tenofovir disoproxil fumarate is excreted in human milk. It is therefore recommended that mothers being treated with tenofovir disoproxil fumarate do not breast-feed their infants.
As a general rule, it is recommended that HIV and HBV infected women do not breast-feed their infants in order to avoid transmission of HIV and HBV to the infant.