Harvard Heart Letter

Take the hassle out of taking warfarin

Less frequent testing or home monitoring may be options.

Despite the recent FDA approval of easier-to-use anticlotting drugs, millions of Americans continue to take warfarin (Coumadin, Jantoven, generic) to prevent dangerous blood clots. The most worrisome clots—which can cause a stroke or potentially fatal shutdown of lung function—arise from atrial fibrillation, deep-vein thrombosis, or the presence of an artificial heart valve.

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