<prompt> Ticagrelor isCyclooxygenase inhibitorsPhosphodiesterase inhibitorsGlycoprotein IIBIIIA inhibitorsP2Y12 receptor blocker  <response>: Ticagrelor is a novel, potent, reversible platelet P2Y12 inhibitor. It is shown to reduce the risk of cardiovascular death, MI, or stroke compared with clopidogrel in ACS patients.This agent reduced moality but increased the risk of bleeding.Other platelets P2Y12 receptor blocker are clopidogrel, prasugrel.Ref: Harrison 19e pg: 1596 