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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.
One characteristic of the FDA definitions of the pregnancy categories is that the FDA requires a relatively large amount of high-quality data on a pharmaceutical for it to be defined as Pregnancy Category A. As a result of this, many drugs that would be labelled as safe in other countries are allocated to Category C by the FDA.
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.
Nifedipine is considered safe in pregnancy and breastfeeding. [5] Nifedipine was patented in 1967, and approved for use in the United States in 1981. [2] [6] [7] It is on the World Health Organization's List of Essential Medicines. [8] It is available as a generic medication. [2]
Its use during pregnancy is contraindicated, although it has been placed in Australian pregnancy category C. [13] Its use during the first trimester (during organogenesis) and 12 weeks prior to pregnancy has been associated with an increased risk of congenital malformations, especially malformations associated with maternal folic acid ...
Guaifenesin is considered pregnancy category C by the U.S. Food and Drug Administration. That classification means means there's no data on human fetuses and studies on animal fetuses showed ...
It is unclear if it is safe for use in pregnancy. [6] Chlorpromazine was developed in 1950 and was the first antipsychotic on the market. [7] [8] It is on the World Health Organization's List of Essential Medicines. [9] [10] Its introduction has been labeled as one of the great advances in the history of psychiatry.
These common diseases can be fatal for unborn babies if you contract them during pregnancy. But take a deep breath: The odds are definitely in your favor as long as you take the right precautions.