Inclusion Criteria:
- Healthy males according to the following criteria:
Based upon a complete medical history, including the physical examination, vital signs (BP, PR), 12-lead ECG, clinical laboratory tests
- Age ≥21 and Age ≤65 years
- Body Mass Index (BMI) ≥18.5 and BMI ≤29.9 kg/m2
- Signed and dated written informed consent prior to admission to the study in accordance with GCP and the local legislation
Exclusion Criteria:
- Any finding of the medical examination (including BP, PR and ECG) 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 (such as epilepsy) or psychiatric disorders or neurological disorders
- 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 60 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)