"... FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby, unless it is used during the last 2 to 4 weeks of pregnancy... "
Macrobid is classified as Pregnancy Category B - which means that while animal tests suggest there is no risk, there have not been enough studies in humans to actually prove it.
Many women have used Macrobid (nitrofurantoin) during pregnancy and it is generally considered safe to use. Macrobid should not however, be used in pregnant patients who are at term (38-42 weeks gestation), during during labor and delivery, or when the onset of labor is imminent as it interferes with the immature enzyme systems in the red blood cells of newborns which can result in a condition called hemolytic anemia.
- Macrobid Information for Consumers
- Macrobid Information for Healthcare Professionals (includes dosage details)
- Side Effects of Macrobid (detailed)
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