Inclusion criteria:
-Healthy male volunteers according to the following criteria: Based upon a complete medical history, including the physical examination, vital signs (Blood Pressure, Pulse Rate), 12-lead Electrocardiogram, clinical laboratory tests
- Chinese ethnicity, Japanese ethnicity according to the following criteria Japanese; born in Japan, be a current Japanese passport holder, have lived outside of Japan <10 years, and have parents and grandparents who were all born in Japan Chinese; ethnic Chinese, born in China or ethnic Chinese born outside of China, and a descendent of 4 ethnic Chinese grandparents who were all born in China
- Caucasian
- Age older than 20 and younger than 45 years
- Normal lung function testing
- Normal peripheral oxygen saturation as determined by non-invasive pulse oxymetry
- Body Mass Index more than 18.5 and Body Mass Index less than 25 kg/m2 for Japanese and Chinese
- Body Mass Index more than 18.5 and Body Mass Index less than 29.9 kg/m2 for Caucasians
- Signed and dated written informed consent prior to admission to the study in accordance with Good Clinical Practice and the local legislation.
Exclusion criteria:
- Any finding of the medical examination (including Blood Pressure, Pulse Rate and Electrocardiogram) deviating from normal and of clinical relevance
- Any evidence of a clinically relevant concomitant disease
- Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
- Surgery of the gastrointestinal tract (except appendectomy)
- Diseases of the central nervous system (including but not limited to any kind of seizures, migraine, stroke or psychiatric disorders) within the past 6 month
- History of relevant orthostatic hypotension, fainting spells or blackouts.
- Chronic or relevant acute infections
- History of relevant allergy/hypersensitivity (including allergy to drug or its excipients)
- Intake of drugs with a long half-life (> 24 hours) within at least one month or less than 10 half-lives of the respective drug prior to administration or during the trial
- Use of drugs which might reasonably influence the results of the trial or that prolong the QT/QTc interval based on the knowledge at the time of protocol preparation within 10 days prior to administration or during the trial
- Participation in another trial with an investigational drug within two months prior to administration or during the trial
- Smoker (> 10 cigarettes or > 3 cigars or > 3 pipes/day)
- Inability to refrain from smoking on trial days
- Alcohol abuse (more than 20 g/day)
- Drug abuse
- Blood donation (more than 100 mL within four weeks prior to administration or during the trial)
- Excessive physical activities (within one week prior to administration or during the trial)
- Any laboratory value outside the reference range that is of clinical relevance
- Inability to comply with dietary regimen of trial site
- A marked baseline prolongation of QT/QTc interval (e.g., repeated demonstration of a QTc interval >450 ms);
- A history of additional risk factors for Torsades de pointes (e.g., heart failure, hypokalemia, family history of Long QT Syndrome)