A growing number of clinical studies indicate that regular ingestion of flavanol rich cocoa exerts a range of effects potentially favorable to vascular health improving endothelial function,reducing elevated blood pressure, increasing insulin sensitivity,and suppressing platelet aggregation [1–14] There is recent evidence that the epicatchin content of cocoa is primarily responsible for its favorable impact on vascular endothelium, which reflects both an acute and chronic up-regulation of nitric oxide production [15,16].