Whether patients on warfarin can take acetaminophen

March 1998

    We're getting lots of calls about whether patients on warfarin can take acetaminophen. A new study in JAMA suggests that acetaminophen can increase the risk of bleeding.

    This is a surprise to many people...they are accustomed to RECOMMENDING acetaminophen instead of aspirin to warfarin patients.

    Patients taking just 4 regular-strength acetaminophen tablets a day, for a week, seem to be TEN times more likely to have a significant increase in INR.

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