Warfarin is a vitamin K antagonist which thins the blood and is used for various conditions, such as Atrial Fibrillation or if you have had a prosthetic heart valve inserted, venous thrombosis, pulmonary embolism or a transient ischaemic attack. This medication is closely monitored due to the potential risk of bleeding, and so if you are taking this medication, you will have regular blood tests and the dose of the medication will be changed accordingly and this will be written clearly in your personal Yellow Book.

When requesting a repeat prescription for Warfarin, the clinicians at the surgery will check that the monitoring has been done before they can safely issue a prescription. Therefore, it is extremely important that you always show the reception staff your Yellow Book to avoid any delays in getting your medication. If you have any questions about this, please get in touch and speak to one of our on-site clinical pharmacists.