1st-generation-antihistamine and alkylamine-type drug with a moderate sedative effect. It is excreted into breastmilk in a clinically non-significant amount with plasma levels that were undetectable or very low in infants whose mothers had received this medication (Findlay 1984). First-generation antihistamines may decrease prolactin levels and interfere with milk production during the first few weeks after birth (Pontiroli 1981, Messinis 1985).Monitor drowsiness and inadequate feeding on the infant.It is not recommended bed-sharing if you are taking this medicine (UNICEF 2006, ABM 2008, Landa 2012, UNICEF 2013). The American Academy of Pediatrics considers this medication as usually compatible with breastfeeding.