RT Journal Article SR Electronic T1 Cardiac arrest in a young healthy male patient secondary to kratom ingestion: is this ’legal high' substance more dangerous than initially thought ? JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e229778 DO 10.1136/bcr-2019-229778 VO 12 IS 7 A1 Hafez Mohammad Ammar Abdullah A1 Iqra Haq A1 Randall Lamfers YR 2019 UL http://casereports.bmj.com/content/12/7/e229778.abstract AB Kratom is a psychoactive herb that has stimulant properties at low doses and has opioid-like properties at higher doses. It has been used for centuries in southeast Asia as a stimulant but has gained increasing popularity as a substitute for opioids in western countries as it is easily available. As most cases of kratom use involve other drugs too, the Food and Drug Administration (FDA) has stopped short of restricting kratom due to difficulty in assessing the adverse effects of kratom alone. We present the case of a young healthy 35-year-old man who suffered a cardiac arrest due to kratom use with no other coingestants. He was subsequently intubated and found to have systolic dysfunction and small brain infarcts. Fortunately, he made a successful recovery and was discharged after a stay at thebehavioural health centre. Our case highlights the potential adverse effects of kratom and the need to regulate its use.