Inclusion Criteria:

• Signed informed consent prior to any study-mandated procedure.
• Male aged between 18 and 45 years (inclusive) at screening.
• No clinically significant findings on the physical examination at screening.
• Body mass index (BMI) between 18 and 28 kg/m2 (inclusive) at screening.
• 12-lead ECG without clinically relevant abnormalities at screening.
• Hematology, clinical chemistry, and urinalysis test results not deviating from the normal range to a clinically relevant extent at screening.
• Negative results from urine drug screen at screening.
• Ability to communicate well with the investigator, in the local language, and to understand and comply with the requirements of the study.

Exclusion Criteria:

• Known hypersensitivity to the study drug or any excipients of the drug formulation.
• Treatment with another investigational drug within 3 months prior to screening.
• History or clinical evidence of alcoholism or drug abuse within the 3-year period prior to screening.
• History or clinical evidence of any disease and/or existence of any surgical or medical condition, which might interfere with the absorption, distribution, metabolism or excretion of the study drugs.
• Smoking within the last 3 months prior to screening.
• Previous treatment with any prescribed or OTC medications (including herbal medicines such as St John's Wort) within 2 weeks prior to screening.
• Loss of 250 ml or more of blood within 3 months prior to screening.
• Positive results from the hepatitis serology, except for vaccinated subjects, at screening.
• Positive results from the HIV serology at screening.
• Presumed non-compliance.
• Legal incapacity or limited legal capacity at screening.