Depends on the type: Coumadin (warfarin) is effective in preventing stroke from blood clots that originate in the heart. These can be from atrial fibrillation, clot on a heart valve, or from a damaged left ventricle.T he new anticoagulants (Eliquis, Pradaxa) are also effective in treating atrial fibrillation that is not assoicated with a valve problem.Coumadin (warfarin) is not recommended for strokes from carotid artery disease .
Answered 3/7/2018
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