<unk>  is a Warfarin reversal agent that is FDA approved for the treatment of acute major bleeding, need for an urgent surgery/invasive procedure. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include headache, nausea/vomiting, hypotension, anemia..
Prothrombin complex concentrate
Factor XIII concentrate
Platelet rich plasma
Recombinant factor VIIa
Vitamin K
Aminocaproic acid 
Asfotase alfa
Eltrombopag