NCIt definition : A thienopyridine with antiplatelet activity. Clopidogrel bisulfate irreversibly alters
the platelet receptor for adenosine diphosphate (ADP), thereby blocking the binding
of ADP to its receptor, inhibiting ADP-mediated activation of the glycoprotein complex
GPIIb/IIIa, and inhibiting fibrinogen binding to platelets and platelet adhesion and
aggregation. (NCI04);