<prompt> Warfarin mechanism of action ?Chelating CaInhibiting antithrombin IIIInhibiting Vitamin K dependent carboxylationInhibiting thrombin  <response>: Ans. is c i.e., Inhibiting Vitamin K dependent carboxylation Warfarin inhibits vitamin K dependent carboxylation of clotting factors by inhibiting the enzyme Vitamin K epoxide reductase. 