Recommendations for the dosage of naloxone to reverse opiate depression in neonates were revised by the American Academy of Pediatrics in 1989. In order to ascertain the extent to which these new recommendations have been implemented in Norway, we sent questionnaires to the maternity centres by mail. The responses from 60 different centres covered 88% of the total births in Norway in 1991. The dosages of naloxone used varied from 0.01-0.1 mg/kg, and the reported frequency of use in newborns varied between