<prompt> Parenteral direct thrombin inhibitor ?XimelagatranDabigatranArgatrobanHeparin  <response>: Ans. is c i.e., Argatroban Parentral direct thrombin inhibitors Argatroban Bivalirudin Hirudin Lepirudino Melagatran Desirudin Oral Direct thrombin inhibitors Dabigatran recent Ximelagatran withdrawn 