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Medical Conditions

 Warfarin is the most widely used oral anticoagulant in the World.
It is used to treat and prevent blood clots in a number of conditions.

  • Deep Vein thrombosis
    Blood clots in the deep veins in the leg which cause pain and swelling. Read more
  • Pulmonary embolus
    Blood clots in the lungs which cause chest pain, breathlessness and a cough. Read more
  • Atrial fibrillation
    This causes an irregular heart beat which increases the risk of a stroke. Read more
  • Heart valve replacement
    Blood clots can form on a replacement heart valve. The clot can break off and cause a stroke or arterial embolus. Warfarin can prevent these clots. It is used for a short time after a tissue valve replacement but is required long term for people with metal valves. The warfarin treatment range varies depending on the type of valve.


Warfarin is sometimes used short-term after heart attacks and for the treatment of arterial clots and venous sinus clots affecting the brain.