How are the effects of warfarin differentiated from vitamin E toxicity?

Updated: Dec 26, 2017
  • Author: Mark Rosenbloom, MD, MBA; Chief Editor: Michael A Miller, MD  more...
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Answer

An elevated international normalized ratio (INR) may result from excessive doses of warfarin anticoagulants. Vitamin K deficiency and liver failure can prolong the prothrombin time (PT) and raise the INR.


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