0.5mg white tablets
1mg Brown tablets
3mg Blue tablets
5mg Pink tablets
Please note there is no set dose for Warfarin and your Warfarin dose will adjust depending on your INR reading. It is important to have both 3mg and 1mg strength tablets of warfarin on repeat prescription as you may have to use both strength tablets to make up your daily dose. It is important to note that we dose in milligrams (mg) and NOT in the number of tablets.
About our service
The Warfarin service is a nurse led service providing dose advice for patients taking Warfarin and Sinthrome. The team is based at Royal Shrewsbury Hospital and provides a service to patients throughout Shropshire, as well as parts of Powys and Telford, to GP patients who are on oral anticoagulation therapy. Please note we currently do not offer advice to patients taking DOACS e.g Apixaban, Rivaroxaban, and you will need to contact your GP for advice on these drugs.
The service is run by a team of experienced Anticoagulation Nurses and Clerical Staff. There is a Consultant Haematologist on call daily that nurses can liaise with should they need advice on patients INR results.
Your clinician should complete a referral to our service which will include the reason why you need Warfarin, the duration of your Warfarin treatment and your target INR range. Once this has been received we can then provide education on Warfarin medication, advice on INR blood test and dose advice to patients. After your first INR blood test patients will automatically receive a phone call on the day of their blood test or the day after, which will include an introduction to our service and an explanation about our dose cards.
Dose advice provided is based on the results of patient’s latest INR blood test and it is important that the advised dose of Warfarin is followed. There is no face to face contact with the nurses and the service works by a dose and postal service. Patients should receive their dose cards within 4 working days after their INR test. Please note all urgent INR results that need immediate dose changes are looked at and a nurse will contact you by telephone on the day or day after your INR test, so it is important to keep the service up to date with contact detail changes.
Frequently Asked Questions