HPS Pharmacies wish to advise that Viatris is experiencing a supply interruption for Coumadin® tablets as follows:

Coumadin® Tablets
Warfarin sodium 5mg
ARTG 42279

Coumadin® Tablets
Warfarin sodium 2mg
ARTG 14937

The supply interruption of Coumadin® 5mg tablets is expected to continue until end-July 2023. Limited supplies of Coumadin® 2mg tablets are expected to continue until 20 March 2023.

To minimise patient impact, Viatris has expedited additional supplies of Coumadin® 1mg and Coumadin® 2mg tablets.

Due to the narrow therapeutic index of warfarin and the lack of data on bioequivalence between brands, Coumadin® is not considered interchangeable with Marevan®. If substituting or switching is unavoidable, the Therapeutic Goods Administration (TGA) recommends close monitoring with frequent INR testing.

Additional information can be found on the TGA website.

Retain this notice in a prominent position, including in other related business units until supplies return to normal. Report any problems identified with medicines, vaccines or medical devices to the TGA.

Should you require further information regarding this matter, please contact Viatris on 1800 314 527, or your pharmacist at HPS Pharmacies.


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