Study to investigate the relative bioavailability of BI 10773 and of linagliptin after concomitant multiple oral administration of 50 mg BI 10773 tablets and 5 mg linagliptin in comparison to 50 mg BI 10773 and 5 mg linagliptin given alone.

Inclusion Criteria:

• Healthy male volunteers according to the following criteria:

  • Based upon a complete medical history and physical examination including vital signs (BP (blood pressure), PR (pulse rate)), 12-lead ECG (electrocardiogram) and clinical laboratory tests

• Age 18 to 50 years (inclusive)

• BMI 18.5 to 29.9 kg/m2 (inclusive)

• Signed and dated written informed consent prior to admission to the study in accordance with GCP (Good Clinical Practice) 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
• 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 30 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