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Use of Long-term, High-dose Diflucan (fluconazole) During Pregnancy May Be Associated With Birth Defects in Infants
This information reflects FDA's current analysis of data available to FDA concerning this drug. FDA intends to update this sheet when additional information or analyses become available.
FDA is informing the public that chronic, high doses (400-800 mg/day) of the antifungal drug Diflucan (fluconazole) may be associated with a rare and distinct set of birth defects in infants whose mothers were treated with the drug during the first trimester of pregnancy. This risk does not appear to be associated with a single, low dose of fluconazole 150 mg to treat vaginal yeast infection (candidiasis).
There are several published case reports of birth defects in infants whose mothers were treated with high-dose fluconazole (400-800 mg/day) for serious and life-threatening fungal infections during most or all of the first trimester.
Based on this information, the pregnancy category for fluconazole indications (other than vaginal candidiasis) has been changed from category C to category D. The pregnancy category for a single dose of fluconazole 150 mg to treat vaginal candidiasis has not changed and remains category C.
Pregnancy category D means there is positive evidence of human fetal risk based on human data but the potential benefits from use of the drug in pregnant women with serious or life-threatening conditions may be acceptable despite its risks.
Healthcare professionals should be aware of the potential risks with long-term, high-dose use of fluconazole and counsel patients if the drug is used during pregnancy or if a patient becomes pregnant while taking the drug.