Safety, Tolerability and Pharmacokinetics of Single Rising and Multiple Oral Doses of Telmisartan / Hydrochlorothiazide (HCTZ) in Healthy Male Volunteers

Inclusion Criteria: * Healthy males according to the following criteria: No finding deviating of clinical relevance and no evidence of a clinically relevant concomitant disease based upon a complete medical history, including the physical examination, vital signs (blood pressure (BP), pulse rate (PR), body temperature), 12-lead ECG, clinical laboratory tests * Age ≥20 and Age ≤35 years * Body Mass Index (BMI) ≥17.6 and BMI ≤26.4 kg/m2 * Signed and dated written informed consent prior to admission to the study in accordance with "Good Clinical Practice (GCP)" Exclusion Criteria: * Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders * Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders * Chronic or relevant acute infections * Any laboratory value outside the reference range that is of clinical relevance * Positive result for hepatitis B surface (HBs) antigen, anti hepatitis C virus (HCV) antibodies, Syphilitic test or HIV test * Surgery of gastrointestinal tract (except appendectomy) * History of relevant orthostatic hypotension (mean standing SBP varies by ≥ 20 mmHg from mean supine systolic blood pressure (SBP) and/or mean standing diastolic blood pressure (DBP) varies by ≥ 10 mmHg from mean supine DBP), fainting spells or blackouts. * History of hepatic dysfunction (e.g. biliary cirrhosis, cholestasis) * History of serious renal dysfunction * History of bilateral renal artery stenosis or renal artery stenosis in a solitary kidney * History of cerebrovascular disorder * History of hyperkalemia * Known hypersensitivity to any component of the formulation; known hypersensitivity to any other angiotensin II receptor antagonist; known hypersensitivity to sulfonamides or sulphonamide-derived drugs (e.g. thiazides) * History of impaired glucose tolerance * History of hypokalemia * History of hyperuricemia * Salt restriction therapy * 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 * Use of drugs which might reasonably influence the results of the trial based on the knowledge at the time of protocol preparation within 7 days prior to administration or during the trial * Participation in another trial with an investigational drug within four months or 6 half-lives of the investigational drug, whichever is longer, prior to administration or during the trial * Smoker (more than 20 cigarettes /day) * Alcohol abuse * Drug abuse * Blood donation (more than 100 mL within four weeks prior to administration or during the trial) * Excessive physical activities (within seven days prior to administration) * Intake of alcohol within two days prior to administration * Inability to comply with dietary regimen of study centre * Inability to comply with smoking cessation during hospitalization