To investigate the bioequivalence of telmisartan administrated in two different ways: both in telmisartan 80 mg/amlodipine 5 mg fixed-dose combination tablets (T) and as telmisartan 80 mg tablet and amlodipine 5 mg tablets (R) in concomitant use

Purpose:

Inclusion criteria:

1. Without any clinically significant findings and complications on the basis of a complete medical history, including the physical examination, vital signs (blood pressure, pulse rate, body temperature), 12-lead electrocardiograms (ECGs), clinical laboratory tests
2. Age: =20 and =35 years
3. Body weight: =50 kg and =80 kg
4. Body mass index (BMI): =18.0 and =25.0 kg/m2

Exclusion criteria:

1. Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological, or hormonal disorders
2. Diseases of the central nervous system (such as epilepsy) or psychiatric or neurological disorders
3. Chronic or relevant acute infections
4. Any clinical relevant findings in laboratory test results deviating from normal
5. A positive result in hepatitis B surface antigen (HBsAg), anti-hepatitis C virus (HCV) antibodies, a syphilis test, or an human immunodeficiency virus (HIV) test
6. History of surgery of the gastrointestinal tract (except appendectomy)
7. History of relevant orthostatic hypotension, fainting spells, or blackouts
8. Known hypersensitivity to any component of the formulation (telmisartan and amlodipine), to any other angiotensin receptor blocker, or to any other dihydropyridine calcium channel blocker compound
9. Intake of drugs with a long half-life (=24 hours) within at least 1 month or less than 10 half-lives of the respective drug before drug administration
10. Intake of drugs which might reasonably influence the results of the trial on the basis of the knowledge at the time of protocol preparation within 7 days before drug administration
11. Participation in another trial with an investigational drug within 1 months or less than 10 times of half-lives of the investigational products before drug administration
12. Smoker (=20 cigarettes/day)
13. Alcohol abuse (60 g or more ethanol/day: e.g., 3 middle-sized bottles of beer, 3 gous [equivalent to 540 mL] of sake)
14. Drug abuse
15. Blood donation (more than 100 mL within 4 weeks before drug administration)
16. Excessive physical activities (ex. Marathon etc) within 1 week before drug administration
17. Intake of alcohol within 2 days before drug administration
18. Inability to comply with dietary regimen of the study site
19. Inability to refrain from smoking during trial days