There have been reports of birth defects. Haloperidol has been shown to be teratogenic and fetotoxic in animal study. It should, therefore, not be administered to women of childbearing potential or nursing mothers.
The lethargy, tremor, and hypexcitability may occur in the neonate of the mother taking the antipsychotic drug during the end of pregnancy of labour.
Haloperidol is excreted in breast milk. If the use of haloperidol is considered essential, breast-feeding should be discontinued.