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  • Title: Potential Interaction between clopidogrel and proton pump inhibitors.
    Author: Howard PA, Vacek JL.
    Journal: Am J Cardiovasc Drugs; 2009; 9(6):353-9. PubMed ID: 19929033.
    Abstract:
    Clopidogrel is widely used in patients with acute coronary syndromes and following percutaneous coronary intervention with stent implantation. The antiplatelet action of clopidogrel is felt to be of critical importance for the reduction of abrupt thrombotic occlusion of stents, particularly with drug-eluting devices. When clopidogrel is used alone or in combination with aspirin (acetylsalicylic acid), the benefits of antiplatelet therapy must be weighed against the potential for serious bleeding, particularly gastrointestinal (GI) bleeds. To minimize the risk of GI injury, proton pump inhibitors (PPIs) are considered the drugs of choice. However, a growing body of evidence suggests that PPIs may adversely interact with clopidogrel, diminishing the antiplatelet effect. Although the current evidence remains controversial, the potential for increased risk of thrombotic complications warrants cautious use of this drug combination until further research can determine the extent of this interaction and whether it is a drug-class effect.
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