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Tenofovir Pregnancy and Breastfeeding Warnings

Tenofovir is also known as: Viread

Tenofovir Pregnancy Warnings

Tenofovir has been assigned to pregnancy category B by the FDA. Animal studies have failed to reveal evidence of teratogenicity. There are no controlled data in human pregnancy. Tenofovir is only recommended for use during pregnancy when benefit outweighs risk.

An Antiretroviral Pregnancy Registry has been established to monitor maternal-fetal outcome of tenofovir exposures during pregnancy. To register patients, physicians should call 800-258-4263 (USA).

Tenofovir Breastfeeding Warnings

Samples of breast milk obtained from 5 HIV-1 infected women during the first postpartum week show that tenofovir is secreted in human milk.

Tenofovir is excreted into human milk. The effects in the nursing infant are unknown. The manufacturer recommends that due to the potential for HIV-1 transmission and the potential for serious adverse reactions in nursing infants, mothers should not breast-feed while taking tenofovir. The U.S. Public Health Service Centers for Disease Control and Prevention advise HIV-1-infected women not to breast-feed to avoid postnatal transmission of HIV-1 to a child who may not yet be infected.

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