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).

Aspirin 25mg (immediate-release), dipyridamole 200mg (extended-release); caps. Dipyridamole inhibits the uptake of adenosine into platelets, endothelial cells and erythrocytes in vitro and in vivo.