<unk> (injection) is a vitamin K antagonist that is FDA approved for the treatment of venous thrombosis and its extension, pulmonary embolism and thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include fatal and nonfatal hemorrhage from any tissue or organ.
Warfarin 
Oxeladin
Clopidogrel
Ticlopidine
Apixaban
Enoxaparin
Ticagrelor
Heparin