Fluconazole is in the FDA pregnancy category C. This means that it is not known whether it will be harmful to an unborn baby. Do not take fluconazole without first talking to your doctor if you are pregnant or could become pregnant during treatment.
Fluconazole passes into breast milk and may be harmful to a nursing baby. For this reason, fluconazole should not be taken by nursing mothers. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.
Category C: Either studies in animals have revealed adverse effects on the foetus (teratogenic or embryocidal or other) and there are no controlled studies in women or studies in women and animals are not available. Drugs should be given only if the potential benefit justifies the potential risk to the foetus.