Clinical Pharmacology

Inclusion Criteria

- Healthy male white subjects; 18 to 46 years of age; body mass index ≥18 and ≤29.9 kg/m*2

Exclusion Criteria

- Subjects with conspicuous findings in medical history and pre-study examination
 - Recent donation of blood/blood components
 - Clinically relevant changes/deviations from normal ECG, clinical examination, clinical chemistry, hematology, urinalysis, and/or blood pressure, heart rate (vital signs)
 - Regular daily consumption of an amount of beer, alcohol, xanthine-containing beverages, foods or beverages containing grapefruit and/or cigarettes that may affect study results
 - History of/current relevant diseases of vital or other organs and of the central nervous system and/or medical conditions that would impair subject’s ability to participate in the trial or that may affect study results
 - Subjects with a history of severe allergies, non-allergic drug reactions, or multiple drug allergies or with hypersensitivity to the study drug or interacting drug, the control agent and/or to inactive constituents, especially hypersensitivity to macrolides antibiotics
 - Regular use of therapeutic or recreational drugs, eg carnitine products, anabolics, high-dose vitamins
 - Use of medication within the 2 weeks preceding the study, especially, concomitant administration of potassium-sparing diuretics, ACE inhibitors, angiotensin-II-receptor blockers, potassium or calcium supplements, nonsteroidal anti-inflammatory drugs like acetylsalicylic acid, indomethacin or ibuprofen, concomitant use of strong CYP3A4 inducers and inhibitors, weak to moderate CYP3A4 inhibitors
 -  Comedication with antihistamines, cisapride or pimozide, colistin, chloramphenicol, clindamycin, lincomycin, streptomycin or other tetracyclines, and medicines, which are known to prolong the QT interval
 - Subjects testing positive in the drug screening
 - Suspicion of drug abuse, including alcohol abuse
 - Subject testing positive for human immunodeficiency virus type 1 and 2 antibody, hepatitis B surface antigen or hepatitis C virus antibody