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Who can and cannot take warfarin

Who can take warfarin

Most adults and children can take warfarin.

Who may not be able to take warfarin

Warfarin is not suitable for some people. To make sure it's safe for you, tell your doctor if you:

  • have ever had an allergic reaction to warfarin or any other medicine
  • are trying to get pregnant or you're already pregnant
  • have liver or kidney problems
  • have had an infection of the lining of your heart, known as endocarditis
  • have a health problem that causes bleeding (such as a stomach ulcer) or makes you bruise easily
  • have high blood pressure (hypertension)

Page last reviewed: 22 April 2022
Next review due: 22 April 2025