A randomized crossover comparative study of aspirin, cilostazol and clopidogrel in normal controls: analysis with quantitative bleeding time and platelet aggregation test.

The effects of three antiplatelet drugs, aspirin, clopidogrel and cilostazol, were examined and compared using a quantitative bleeding time (QBT) test apparatus. In 12 healthy adult male subjects, a QBT test and platelet aggregation test were performed before and after medication. Cilostazol was found to be as effective as aspirin and clopidogrel in inhibiting platelet aggregation.