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The pregnancy category of a medication is an assessment of the risk of fetal injury due to the pharmaceutical, if it is used as directed by the mother during pregnancy. It does not include any risks conferred by pharmaceutical agents or their metabolites in breast milk. Every drug has specific information listed in its product literature.
Topical nicotinamide and topical zinc are safe, however, there are no FDA pregnancy category ratings. [27] [28] Topical salicylic acid and topical dapsone are classified as FDA pregnancy category C. [23] [28] Acne medications to avoid during pregnancy include oral isotretinoin and topical tazarotene as there have been reports of birth defects.
The conditions required under the program include limiting prescription and dispensing rights to authorized prescribers and pharmacies only, keeping a registry of all patients prescribed thalidomide, providing extensive patient education about the risks associated with the drug, and providing periodic pregnancy tests for women who take the drug.
Doxylamine and pyridoxine are pregnancy compatible drugs, [4] consistent with FDA's safety assessment of the combination product. They have been categorized by the FDA as a category A drug (no evidence of risk to the fetus). This letter classification system for risk in pregnancy is no longer being utilized and is currently being phased out by ...
Enoxaparin is a FDA pregnancy category B drug which means enoxaparin is not expected to cause harm to an unborn baby when used during pregnancy. [9] Enoxaparin does not cross the placenta therefore it is unlikely an unborn baby would be exposed to it. [9]
The FDA originally labeled rabeprazole as a pregnancy category B drug (meaning that in vivo research failed to demonstrate a fetal hazard, though human studies are lacking), [17] but it was reclassified as a pregnancy category C drug (meaning that in vivo research has shown a fetal hazard, though the benefit of use may outweigh the risk) in 2014.
Bupivacaine crosses the placenta and is a pregnancy category C drug. However, it is approved for use at term in obstetrical anesthesia. Bupivacaine is excreted in breast milk. Risks of stopping breast feeding versus stopping bupivacaine should be discussed with the patient. [19]
While both drugs had overall similar results, mifepristone was found to act faster. [151] Health Canada gave approval to mifepristone in July 2015. [152] Initially, its use was limited to seven weeks into a pregnancy, but this was changed to nine weeks in 2017. The previous requirement of written consent from the woman was also ended at the ...