Prescrire international
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Prescrire Int
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Dabigatran is an oral anticoagulant that inhibits thrombin but not vitamin K. In mid-2012, there was no commercial test to monitor its anticoagulant effect, nor an antidote. In mid-November 2011, the European pharmacovigilance database contained 256 reports of haemorrhagic deaths attributed to dabigatran. ⋯ A dabigatran dose below 220 mg per day does not protect patients from the risk of haemorrhage. In practice, dabigatran should be reserved for patients with a high risk of thrombosis in whom the target INR cannot be maintained on antivitamin K therapy alone. The risk of bleeding must be taken into account, renal function must be closely monitored, and patients and their carers must be correctly informed about this risk.