Medicines in pregnancy and breastfeeding

This app is a fast guide for healthcare providers to know medicines in which category are located when prescribing medicines for pregnant and breastfeeding women

This version contains 534 medicines, more medicines will be added in next versions

It is clear that any drug or chemical substance administered to the mother is
able to cross the placenta to some extent unless it is destroyed or altered
during passage, or its molecular size and low lipid solubility limit transplacental transfer.
It is important to note that almost every substance used for therapeutic purposes can and does pass from the mother to the fetus.

In 1979, the FDA established five letter risk categories A, B, C, D or X to indicate the potential of a drug to cause birth defects if used during pregnancy.


In 2015 the FDA replaced the former pregnancy risk letter categories on prescription and biological drug labeling with new information to make them more meaningful to both patients and healthcare providers.
While the new labeling improves the old format, it still does not provide a definitive “yes” or “no” answer in most cases. Clinical interpretation is still required on a case-by-case basis.