The purpose of the study is to learn more about how esreboxetine is handled by the body i.e. the absorption, metabolism and excretion of esreboxetine.

Inclusion Criteria:

Healthy male subjects aged 45 to 65 years Body mass index (BMI=weight/height2) 18 to 30 kg/m2

Exclusion Criteria:

Any clinically relevant abnormality identified on the screening medical assessment Any condition possibly affecting drug absorption Subjects with exposure to significant radiation (eg serial Xray or CT scans, barium meal etc)or who have participated in a radiolabelled study in the past 12 months, or who have occupational exposure to radioactivity History of regular alcohol consumption exceeding 14 drinks/week (1 drink = 5ounces (150ml) of wine or 12 ounces (360ml) of beer or 1.5 ounces (45ml) of hard liquor) within 6 months of screening 12-lead ECG demonstrating QTc>450mses at screening Treatment with an investigational drug within 30 days or 5 half-lives preceding the first dose of study medication