The objective of this study is to investigate how quickly and to what extent the 14-Carbon labeled SAM-531 is absorbed into the bloodstream, converted and eliminated from the body after oral administration in healthy male subjects. As 14-Carbon labeled SAM-531 is radioactive, this enables the compound to be traced in blood, urine and feces.

Inclusion Criteria:

• Men aged 18 to 50 years inclusive at screening
• Healthy as determined by the investigator on the basis of screening evaluations

Exclusion Criteria:

• Presence or history of any disorder that may prevent the successful completion of the study.
• Any significant cardiovascular, hepatic, renal, respiratory, gastrointestinal, endocrine, immunologic, dermatologic, hematologic, neurologic, or psychiatric disease.