To assess the safety and tolerance of 5 mL to 20 mL PEG 400 in multiple rising doses

Inclusion Criteria:

• Healthy male subjects as determined by results of screening
• Signed written informed consent in accordance with good clinical practice (GCP) and local legislation
• Age ≥ 18 and ≤ 55 years
• Broca ≥ - 20 % and ≤ + 20 %

Exclusion Criteria:

• Any finding of the medical examination (including blood pressure, pulse rate and electrocardiogram [ECG]) deviating from normal and of clinical relevance
• History of current gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunologic, hormonal disorders, including a clinical history of viral hepatitis, or serological evidence of active Hepatitis B or Hepatitis C infection
• History of orthostatic hypotension, fainting spells and blackouts
• Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
• 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 drugs with a long half-life (> 24 hours) within one month prior to administration
• Use of any drugs which might influence the results of the trial within 10 days prior to administration or during the trial
• Participation in another trial with an investigational drug within one month prior to administration or during the trial
• Smoker (> 10 cigarettes or three cigars or three pipes/day) or inability to refrain from smoking 10 hours before the morning dose and one hour before afternoon/evening dose and one hour after any dose
• Alcohol abuse (> 60 g/day)
• Drug abuse
• Blood donation within one month prior to administration or during the trial
• Excessive physical activities within five days prior to administration or during the trial
• Any laboratory value outside the clinically accepted reference range and of clinical relevance