Daiichi Sankyo Inc and Eli Lilly received approval from the US Food and Drug Administration (FDA) for Effient (prasugrel) tablets to be used for the reduction of thrombotic cardiovascular events. Effient reduces thrombotic cardiovascular events (including stent thrombosis) in patients suffering from acutecoronary syndromes and undergoing an artery-opening procedure known as percutaneous coronary intervention (PCI). PCI usually includes the placement of a stent to help keep the artery open.