Efinaconazole

The Basics

What is Efinaconazole?

Approved for use as a 10% topical solution for the treatment of onychomycosis.

Brand names for Efinaconazole

Jublia

How Efinaconazole is classified

Anti-Infective Agents, Antifungal Agents

Efinaconazole During Pregnancy

Efinaconazole pregnancy category

Category Not AssignedNote that the FDA has deprecated the use of pregnancy categories, so for some medications, this information isn’t available. We still think it’s useful to list historical info, however, given what a common proxy this has been in the past.

What we know about taking Efinaconazole while pregnant

There are no available human data for the use of JUBLIA during pregnancy to inform any drug associated risks of major birth defects, miscarriage, or adverse maternal or fetal outcomes. In animal reproduction studies, efinaconazole did not cause malformations or any harm to the fetus when administered to pregnant rabbits and rats during the period of organogenesis at subcutaneous doses up to 112 and 154 times, respectively, the Maximum Recommended Human Dose (MRHD) based on Area Under the Curve (AUC) comparisons. Embryolethality was observed only in rats in the presence of maternal toxicity at systemic exposures 559 times the MRHD based on AUC comparisons. Subcutaneous efinaconazole administration to pregnant rats from the beginning of organogenesis through the end of lactation did not cause embryofetal toxicity or developmental effects at systemic exposures 17 times the MRHD based on AUC comparisons (see Data). The background risk of major birth defects and miscarriage for the indicated population is unknown. However, the background risk in the U.S. general population of major birth defects is 2 to 4%, and of miscarriage is 15 to 20%, of clinically recognized pregnancies. Data Animal Data Systemic embryofetal development studies were conducted in rats and rabbits. Subcutaneous doses of 2, 10 and 50 mg/kg/day efinaconazole were administered during the period of organogenesis (gestational days 6-16) to pregnant female rats. In the presence of maternal toxicity, embryofetal toxicity (increased embryofetal deaths, decreased number of live fetuses, and placental effects) was noted at 50 mg/kg/day (559 times the MRHD based on AUC comparisons). No embryofetal toxicity was noted at 10 mg/kg/day (112 times the MRHD based on AUC comparisons). No malformations were observed at 50 mg/kg/day (559 times the MRHD based on AUC comparisons). Subcutaneous doses of 1, 5, and 10 mg/kg/day efinaconazole were administered during the period of organogenesis (gestational days 6-19) to pregnant female rabbits. In the presence of maternal toxicity, there was no embryofetal toxicity or malformations at 10 mg/kg/day (154 times the MRHD based on AUC comparisons). In a pre-and postnatal development study in rats, subcutaneous doses of 1, 5 and 25 mg/kg/day efinaconazole were administered from the beginning of organogenesis (gestation day 6) through the end of lactation (lactation day 20). In the presence of maternal toxicity, embryofetal toxicity (increased prenatal pup mortality, reduced live litter sizes and increased postnatal pup mortality) was noted at 25 mg/kg/day. No embryofetal toxicity was noted at 5 mg/kg/day (17 times the MRHD based on AUC comparisons). No effects on postnatal development were noted at 25 mg/kg/day (89 times the MRHD based on AUC comparisons).

Taking Efinaconazole While Breastfeeding

What are recommendations for lactation if you're taking Efinaconazole?

Topical efinaconazole has not been studied during breastfeeding. Because maternal blood levels are very low after topical application to the toenails, it is unlikely that a measurable amount of the drug will enter the breastmilk.

Maternal / infant drug levels

Topical efinaconazole has not been studied during breastfeeding. Because maternal blood levels are very low after topical application to the toenails, it is unlikely that a measurable amount of the drug will enter the breastmilk.

Possible effects of Efinaconazole on milk supply

Relevant published information was not found as of the revision date.

Possible alternatives to Efinaconazole

Ciclopirox, Tavaborole, Terbinafine.