Pharmacokinetics (relative bioavailability), safety and tolerability

Inclusion Criteria:

• Healthy males from 21 to 50 years and within +-20% of their normal weight (Broca index)
• Written informed consent

Exclusion Criteria:

• Any findings of the medical examination or laboratory tests deviating from normal and of clinical relevance
• Gastrointestinal, hepatic, renal, respiratory (especially bronchial asthma and chronic obstructive pulmonary disease), cardiovascular, metabolic, immunological or hormonal disorders
• Diseases of the central nervous system (such as epilepsy) or psychiatric disorders
• History of orthostatic hypotension, fainting spells or blackouts
• Chronic or relevant acute infections
• History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
• Intake of a drug with a long half-life (>=24 hours) within at least one month or less than ten half-lives of the respective drug before enrolment in the study
• Use of any drugs which might influence the results of the trial within seven days prior to administration or during the trial
• Participation in another trial with an investigational drug within two months prior to the start of the study
• Smoker (> 10 cigarettes or 3 cigars or 3 pipes/day)
• Inability to refrain from smoking on study days
• Alcohol abuse
• Drug abuse
• Blood donation (>100 ml) within four weeks prior to administration
• Other disease or abnormality of clinical relevance
• Excessive physical activities within two weeks prior to administration or during the trial