ACTIVATED BLOOD COAGULATION FACTOR X (FXA) INHIBITOR

摘要

Disclosed is an activated blood coagulation factor X (FXa) inhibitor which is reduced in the risk of bleeding in the treatment of thromboembolism. Specifically disclosed is a blood coagulation inhibitor for oral administration, which comprises a compound represented by formula (1), a pharmacologically acceptable salt thereof, or a hydrate of the compound or the pharmacologically acceptable salt as an active ingredient. The blood coagulation inhibitor is characterized in that the dosage of the blood coagulation inhibitor can be determined by the following steps (A) to (D): (A) a factor associated with the risk of bleeding of the blood coagulation inhibitor is selected as a dosage determination factor; (B) a standard value for the dosage determination factor is set; (C) the level of the dosage determination factor is measured in a patient who needs the administration of the blood coagulation inhibitor; and (D) the dosage for the patient is determined by employing the standard value as a measure.