Prothrombin Complex Concentrates (PCC) are pharmaceutical products containing a combination of Vitamin K-dependent clotting factors. These factors primarily include Factor II, VII, IX, and X. PCCs are used to rapidly reverse anticoagulation, particularly in patients who have been on warfarin or other Vitamin K antagonists. They are vital in managing bleeding complications and in preparing patients for emergency surgeries where rapid reversal of anticoagulation is necessary.