Warfarin is a medication that, with few exceptions, is dosed to effect. When the INR does not respond as predicted, it is important to consider possible causes before the warfarin dose is adjusted.

Daily warfarin dosing requirements clearly decrease with advancing age. To examine the relation between age and warfarin dosing, researchers analyzed data from 101 U.S. sites that were participating ...

We tell our patients to take their warfarin (Coumadin) in the afternoon, but our hospital pharmacist says that this medication may be taken at any time of day as long as the patient is consistent. Are ...

Warfarin is an oral anticoagulant, commonly known as blood thinner, that is prescribed to help treat the formation of dangerous blood clots that can lead to stroke or heart attacks. Even with newer ...

In a large-scale study and an upcoming clinical trial, scientists supported by the National Institutes of Health address one of the trickiest issues in prescribing medicine—how to quickly optimize ...

Blood thinners don’t really thin your blood. They just interrupt your body’s natural clotting process. Warfarin and heparin act on different parts of this process. Doctors usually prescribe warfarin ...

Patient self-management of warfarin is endorsed by U.S. guidelines, but an in-clinic approach remains the norm due to clinician reluctance and other barriers. Among patients who agreed to make their ...

Atrial fibrillation patients with mental illness are less likely to receive warfarin anticoagulation; those who do receive warfarin have excess risk of over-anticoagulation. Objectives: To determine ...