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This product should be used in pregnant women or women who may possibly be pregnant only if the expected therapeutic benefits are judged to outweigh the possible risks associated with the treatment. [The safety of this product for use during pregnancy has not been established. In animal studies, when tafluprost solution was administered intravenously to pregnant rats at a dose of 30 μg/kg/day (2000 times the clinical dose*), teratogenicity and post-implantation embryonic mortality rate increased; at 10 μg/kg/day (about 670 times the clinical dose*) adverse effect on fetal development (low body weight and unossification of breast bone in fetuses) was observed. In an intravenous administration in pregnant rabbits at 0.1 μg/kg/day (about 6.7 times the clinical dose*), miscarriage and mortality rate after implantation increased, and luteal body and implantation decreased; at 0.03 μg/kg/day (2 times the clinical dose*) teratogenicity was observed. In an intravenous administration study in pregnant and lactating rats at a dose level of 1 μg/kg/day (about 67 times the clinical dose*), mal-nursing of dams was observed and 4-day survival rate of new born baby decreased. On the other hand, in the study using uteri isolated from rats, uterine contraction was observed at about 3.3 times the plasma concentration of tafluprost (less than 30 pg/mL), or about 420 times the plasma concentration of unbound tafluprost (less than 0.24 pg/mL), calculated based on protein binding ratio, estimated after ocular administration of the clinical dosage.]
*Dosage (0.015 μg/kg/day) when one drop (30 μL) of this product is instilled into both eyes at a time for a 60 kg patient.
Avoid administration to nursing mothers. If administration is judged to be essential, the patients should be instructed to stop breast-feeding during the treatment. [A study in rats has shown excretion of tafluprost in breast milk after ocular instillation.]
