The first stop for professional medicines advice

Warfarin

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Advising on missed or delayed doses of medicines

4 March 2025Guidance on advising people who occasionally miss a scheduled dose of a regular medicine, including information sources and advice for high-risk medicines.

Managing specific interactions with smoking

31 October 2023When individuals taking certain medicines stop, start or re-start smoking, monitoring and dose changes may be needed.

Using intramuscular injections in people on oral anticoagulants

20 September 2023Advice on risks related to use of small volume (less than 3mL) intramuscular (IM) injections in people on oral anticoagulants (for example, DOACs, warfarin)

Accessing resources for patients on high risk medicines

19 December 2022A number of resources are available to support the safe use of high-risk medicines. Healthcare professionals should ensure they are available for their patients

Using warfarin with proton pump inhibitors (PPIs)

17 June 2022PPIs may enhance warfarin anticoagulation. Patients on warfarin require counselling when starting on a PPI and INR monitored appropriately.

Using oral anticoagulants during breastfeeding

2 November 2021Warfarin is the preferred choice during breastfeeding; rivaroxaban or dabigatran may also be used. Recommendations apply to full term and healthy infants.

Warfarin monitoring

16 July 2021

Anticoagulant suggestions for adults with swallowing difficulties

1 July 2021A range of oral anticoagulant formulations are suitable for adults with swallowing difficulties.