Warfarin brands

There are two brands of warfarin in Australia:

Watch our video, in which Libby talks about the concerns some people may have about warfarin. One of the main things you have to remember is which brand of warfarin you are on (Coumadin or Marevan). It is important to stick with the same brand to keep the effect on your blood clotting consistent.

Stick to the same brand of warfarin

You will be prescribed one brand of warfarin — Coumadin or Marevan. You should always stick to the same brand of warfarin because swapping brands may affect your blood and your International Normalised Ratio (INR) test results. Always check the brand name on the medicine label or packaging to make sure that you, or the person you care for, are given the right brand of tablets.

Warfarin is one of a small number of medicines where you should not change brands.

Tablet strengths

Warfarin comes in different tablet strengths. Your doctor may prescribe more than one tablet strength to make up your dose. Each tablet strength comes in a different colour to help you tell the difference between them. It’s important that you also check the tablet strength on the medicine label or packaging to ensure you’re taking the right strength as prescribed by your doctor. The colour also differs between brands.

Ask your doctor or pharmacist if you are unsure of your dose or which strength of tablet to use.

MAREVAN brand warfarin tablets
Marevan 1mg tablet 1 mg tablet (brown)
Marevan 3mg tablet 3 mg tablet (blue)
Marevan 5mg tablet 5 mg tablet (pink)
COUMADIN brand warfarin tablets
Coumadin 1mg tablet 1 mg tablet (light tan)
Coumadin 2mg tablet 2 mg tablet (lavender)
Coumadin 5mg tablet 5 mg tablet (green)
(Source: Aspen Pharmacare Australia. Current as of 16 May 2012.)