as many as 30% of patients on maintenance clopidogrel (75 mg/day) may show elevated platelet reactivity. Earlier studies also seem to indicate that reloading patients already on maintenance ...

plus extended-release dipyridamole (200 mg) given twice daily, or clopidogrel (75 mg) given once daily. The study was sponsored by the maker of the aspirin/dipyridamole combination (Aggrenox).