• Yoonsun Mo and Felix K Yam.
• Department of Pharmacy Practice, Western New England University College of Pharmacy, Springfield, Massachusetts.
• Pharmacotherapy. 2015 Feb 1;35(2):198-207.

AbstractWarfarin, a vitamin K antagonist, has been the only orally available anticoagulant for > 60 years. During the past decade, the U.S. Food and Drug Administration has approved several target-specific oral anticoagulants (TSOACs) for the prophylaxis and treatment of arterial and venous thromboembolism and stroke prevention in patients with nonvalvular atrial fibrillation. These new agents have several advantages over warfarin including more predictable pharmacokinetics and pharmacodynamics, fewer food and drug interactions, and lack of need for routine coagulation monitoring. However, unlike warfarin, currently no antidotes are available to reverse the anticoagulant effect of TSOACs. Specific antidotes for TSOACs may not be needed in most situations due to their short half-life, yet the absence of antidotes for these agents is a concern, especially in emergent situations such as life-threatening major bleeding or nonelective major surgery. Several specific antidotes for TSOACs including idarucizumab, andexanet alfa, and aripazine have been developed and have shown promise in early clinical trials evaluating their efficacy and safety. In this narrative review, the progress made in developing specific antidotes for TSOACs is summarized based on the latest available preclinical and clinical data.© 2015 Pharmacotherapy Publications, Inc.

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