<unk>  is a P2Y12 platelet inhibitor, platelet aggregation inhibitor that is FDA approved for the treatment of acute coronary syndrome (ACS), recent MI, recent stroke, or established peripheral arterial disease. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include non-major bleeding.
Clopidogrel
Ticlopidine
Ticagrelor
Iotalamic acid
Apixaban
Warfarin 
Heparin
Dabigatran