Warfarin

Warfarin

Find reliable independent health and treatment information about warfarin written by Australian experts. This includes resources for consumers and health professionals.

About warfarin

Warfarin is a type of anti-clotting medicine, called an anticoagulant. It is a medicine used by thousands of people to prevent blood clots.

If you take warfarin, it is important that you know how to use it safely and correctly, to avoid side effects, especially bleeding.

To help make sure that warfarin is working safely and effectively in your body, you will need regular blood tests (monitoring).

Read about living with warfarin, how warfarin is monitored, the medicines that interact with warfarin, and how your lifestyle and diet can affect the way warfarin works.

Use our Warfarin Dose Tracker to help you keep track of your INR results and your daily warfarin dose. Download or order a free copy, or have a copy sent to you by calling us on (02) 8217 8700.

Download our Living well with warfarin fact sheet — for people who’ve been prescribed warfarin, or their carers, to help you live safely with warfarin. The more you know about warfarin, the more your health will benefit.

Find out more

For health professionals  

Warfarin is the mainstay of anticoagulant therapy but like all oral anticoagulants it requires careful patient selection and routine clinical monitoring, to minimise the risk of thrombosis and bleeding. Benefits, harms and lifestyle factors should be discussed with the patient when selecting and reviewing treatment and a structured approach used to optimising warfarin management.

Our CPD activities

Consolidate your knowledge on warfarin, brush-up on current guidelines and practices and earn CPD points through our learning activities.

For your patients

Use the following tools and resources in your patient consultations.

  • Warfarin Dose Tracker - help your patients and their carers track their current warfarin level
  • Living with Warfarin - fact sheet intended to support your professional conversations with people taking warfarin, or their carers.

Clinical information

The information below uses the latest guidelines and evidence to help health professionals better manage their patients who have been prescribed warfarin.

Oral anticoagulants — achieving good anticoagulant practice focuses on optimal use of warfarin and the newer oral anticoagulants dabigatran, rivaroxaban and apixaban (see program Key points). The February 2013 NPS Medicinewise News discusses good anticoagulant practice, particularly use of oral anticoagulants in stroke prevention for people with non-valvular AF.

NPS RADAR articles have discussed the evidence behind the use of:

Other tools and resources


Latest information - warfarin sodium

Audience:
       

(Medicine)
12 Dec 2014 Coumadin Tablets is a brand of medicine containing the active ingredient warfarin sodium. Find out about side effects, who can take it and who shouldn’t use Coumadin Tablets by reading the latest Australian consumer medicine information, plus tips on how to use medicines wisely and safely.
(Medicine)
12 Dec 2014 Marevan Tablets is a brand of medicine containing the active ingredient warfarin sodium. Find out about side effects, who can take it and who shouldn’t use Marevan Tablets by reading the latest Australian consumer medicine information, plus tips on how to use medicines wisely and safely.
(Medicine)
09 Dec 2014 Fish oil is a medicine, and like any medicine can have side effects. Make sure to keep your doctor and pharmacist informed of all medicines you take, even complementary and non-prescription medicines.
(Consumer publication)
11 Aug 2014 Stopping dabigatran suddenly is dangerous, and could put you at risk of blood clots, leading to a stroke. Talk to your doctor about the risks and benefits in your particular situation before making any decision about stopping dabigatran.
(Media release)
06 Aug 2014 With anticoagulant medicine dabigatran (brand name Pradaxa) in the news this week following reports that safety information about the medicine had been withheld by the manufacturer, NPS MedicineWise is reminding people not to stop taking it without talking to their doctor.
(Medicine)
05 Aug 2014 Learn how to reduce the risk of side effects with warfarin, & know the signs of bleeding so you can quickly treat any bleeding side effects.
For health professionals (Health professional publication)
09 Jul 2014 Do you know the high-risk medicines & patient factors that put people at risk? Adverse drug reactions caused by inappropriate prescribing, dispensing or monitoring can be prevented.
(Medical test)
16 May 2014 The PT test is a liver function test. The blood test checks how well clot-preventing medicines (anti-coagulants) such as warfarin are working, and investigates the clotting tendency of blood, liver damage & vitamin K status. Find out more
For health professionals (Medicine)
08 May 2014 The vitamin K antagonist warfarin and the newer oral anticoagulants dabigatran and rivaroxaban are approved treatments for stroke prevention in people with non-valvular atrial fibrillation (AF), but dabigatran and rivaroxaban are not PBS listed for this indication. Read about which people with non-valvular AF need anticoagulation and the role of these different medicines.
For health professionals (Health professional publication)
13 Mar 2014 The vitamin K antagonist warfarin can be used for the prevention and treatment of venous thromboembolism (VTE). The newer oral anticoagulants dabigatran, rivaroxaban and apixaban are all PBS subsidised for the prevention of VTE in patients undergoing total hip replacement or total knee replacement. Rivaroxaban is also PBS subsidised for treatment of acute symptomatic deep vein thrombosis without symptomatic pulmonary embolism and prevention of recurrent VTE. Read about the place in therapy of these medici