Cangrelor is an intravenous, direct-acting, reversible P2Y12 inhibitor for patients undergoing percutaneous coronary intervention (PCI) who have not been yet treated by oral P2Y12 inhibitors. An advantage Cangrelor provides over oral P2Y12 inhibitors (such as prasugrel, ticagrelor, and clopidogrel) is that it is an active drug not requiring metabolic conversion therefore providing a rapid onset and offset of action.