Pregnancy Category C. Gabapentin has been shown to be fetotoxic in rodents. However, there are no adequate and well-controlled studies in pregnant women. Gabapentin should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Gabapentin is secreted into human milk after oral administration. A breastfed infant could be exposed to a maximum dose of approximately 1 mg/kg/day of the drug. Since the effect on breastfeeding infant is unknown, gabapentin should be used in breastfeeding women only if the benefits clearly outweigh the risks.