Severity: High - Risk of internal bleeding
Those who take acetaminophen along with the widely used blood-thinning drug warfarin may face the risk of serious internal bleeding. People on warfarin who take acetaminophen for at least seven days in a row should be closely watched for bleeding.
Mitigation: Jan 5, 2014 by Dr. Adam Careful:
Asked patient to discontinue regular use of Tylenol and to consult with clinician if they need to resume to allow appropriate INR monitoring
Similar test was performed within the past 14 days