Clopidogrel is an oral thienopyridine derivative, used as an anti-platelet aggregation agent to inhibit blood clot formation in coronary artery disease, peripheral vascular disease and cerebrovascular disease. In this book, the authors discuss the pharmacology, clinical uses and adverse effects of clopidogrel. Topics include clopidogrel use in neurointerventional surgery; management of clopidogrel hypersensitivity; clopidogrel and gastrointestinal harm; perioperative management of clopidogrel in urological surgery; and platelet function testing to guide therapy in poor responders to clopidogrel.