RT Journal Article SR Electronic T1 Unintentional ingestion of a high dose of acenocoumarol in a young child JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e240365 DO 10.1136/bcr-2020-240365 VO 14 IS 4 A1 Martijn R Brands A1 Jelmer Sytema A1 Marinus van Hulst A1 Arvid WA Kamps YR 2021 UL http://casereports.bmj.com/content/14/4/e240365.abstract AB Acute intoxication with a vitamin K antagonist may cause serious coagulopathy. We report the accidental ingestion of a high dose of acenocoumarol in a young child. Two intravenous administrations of 5 mg of vitamin K, in combination with fast and repeated administration of activated charcoal and sodium sulfate, were sufficient to prevent coagulopathy and related symptoms, despite a confirmed elevated blood acenocoumarol concentration (260 µg/L).