We report the case of a 17-year-old boy with a significant history of drug and 
alcohol abuse, which included smoking marijuana mixed with brodifacoum. As a 
consequence, the patient developed a prolonged coagulopathy that persisted for 
more than 1 year. To our knowledge, this is the first case reported in the 
literature in which super-warfarin intoxication has been associated with 
marijuana smoking. This report should increase the awareness of pathologists and 
clinicians when examining a patient with a history of drug abuse who exhibits 
persistent vitamin K1-dependent coagulopathy.