All A to Z Topics


Find everything you need to know about the anticoagulant, warfarin, including causes, symptoms, diagnosis and treatment, with links to other useful resources.
Things to consider when taking warfarin
Read health information from the NHS about considerations when taking the anticoagulant, warfarin, such as monitoring your dose and when it should be avoided.
Side effects of warfarin
Read NHS information about the side effects of warfarin, which include excessive bleeding and, less commonly, rashes, nausea or vomiting, hair loss and diarrhoea.
Interactions with other medicines
Warfarin can interact with many other medicines, as well as alcohol and some foods.
Missed or extra doses
Read information from the NHS about what to do if you are taking the anticoagulant drug warfarin and you miss your dose or you take an extra dose.
Frequently asked questions
Read the answers to some common questions about taking the anticoagulant medication warfarin, covering nosebleeds, operations, vaccinations, sports, piercings, periods and pregnancy.