The Food and Drug Administration is reviewing the results of a Danish study that concludes there is a possible increased risk of miscarriage with the use of oral fluconazole (Diflucan) in pregnancy, according to a safety alert issued April 26.
The current drug label for oral fluconazole states that data from studies in women does not suggest an increased risk of problems during pregnancy or abnormalities in developing babies when women used a single 150-mg dose to treat vaginal yeast infections. However, reports of abnormalities at birth have resulted from high doses (400-800 mg/day) taken during pregnancy for much longer than a single dose. The Danish study had most pregnant women use one or two doses of 150 mg.
Oral fluconazole is used to treat yeast infections of the vaginal area, mouth, and esophagus. It can also be used to treat a fungal infection of the brain and spinal cord.
The FDA is also evaluating additional data and will make recommendations when the review is complete.
“Until FDA’s review is complete and more is understood about this study and other available data, FDA advises cautious prescribing of oral fluconazole in pregnancy,” the safety alert states.
The FDA also noted that the Centers for Disease Control and Prevention recommends using topical antifungal products only when treating pregnant women with vulvovaginal yeast infections.
Read more about the investigation on the FDA website .