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U.S. Department of Health and Human Services

Science & Research

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Pregnancy Registries

Pregnant woman holding her belly
  • Many women need to take medicine while they are pregnant.
  • Some women take medicines for health problems, like diabetes or high blood pressure, that can start or get worse when a woman is pregnant.
  • Some women use medicine before they find out they are pregnant.


How can women and their doctors learn more about the effects of medicine use during pregnancy?

Pregnancy Exposure Registries can help women and health professionals better understand how medicines affect pregnant women.  

What are pregnancy registries?

A pregnancy exposure registry is a study that collects health information from women who take medicines and vaccines when they are pregnant and breastfeeding. Information is also collected on the newborn baby. This information is compared with women who have not taken medicine during pregnancy.


Why are pregnancy registries important?

Registries Help Moms Measure Medication Risks

Since drug companies can’t test medicine on pregnant women, they may have little or no information about how these medicines could effect a woman or her fetus. Pregnancy registries are the best way to learn and to help women decide about taking medicines. These studies can also help improve the information for pregnant women that is provided on drug labels.



Contact FDA

Food and Drug Administration Office of Women's Health

10903 New Hampshire Avenue


Silver Spring, MD 20993