Bioequivalence Between WE 941 OD and Brotizolam (Lendormin®) in Healthy Adult Males

Inclusion Criteria: * Age between 20 and 35 years * Weight between 50 and 80 kg * Obesity level within the range of +/- 20% of the standard weight according to the Body Mass Index (BMI) method * Judged as eligible as a study object following the screening test by the investigator * Volunteers to participate in the study, who are capable of giving written informed consent Exclusion Criteria: * Known hypersensitivity to drugs * History of drug or alcohol abuse * Received other investigational drug within 4 months of the trial drug administration * Had \> 400 mL of whole blood drawn within 3 months of the trial drug administration * Had \> 400 mL of blood components drawn within 1 month of the trial drug administration * Used any drug within 10 days of the trial drug administration * Engaged in strenuous exercise within 5 days of the trial drug administration * Consumed alcohol within 3 days of the trial drug administration * Judged as ineligible for the study participation by the investigator for a reason other than above