Bioequivalence of Two Different Polymorphs of Dabigatran Etexilate in Healthy Male and Female Volunteers

Bioequivalence of Two Different Polymorphs of 150 mg Dabigatran Etexilate Following Oral Administration in Healthy Male and Female Volunteers (Double-blind, Randomised, Single Dose, Replicate Design in a Two Treatments, Four Periods Crossover Phase I Study)

To establish the bioequivalence of two polymorphs of dabigatran etexilate, polymorph I and polymorph II

Inclusion Criteria:

1. Healthy males and females according to the following criteria:

   Based upon a complete medical history, including the physical examination, vital signs (BP, PR), 12-lead ECG, clinical laboratory tests

2. Age ≥60 and ≤85 years

3. BMI ≥18.5 and BMI ≤32.0 kg/m2 (Body Mass Index)

4. Signed and dated written informed consent prior to admission to the study in accordance with GCP and the local legislation

Exclusion Criteria:

1. Clinically relevant gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
2. Clinically relevant surgery of gastrointestinal tract
3. Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
4. Any relevant bleeding history
5. History of relevant orthostatic hypotension, fainting spells or blackouts
6. Chronic or relevant acute infections
7. History of allergy/hypersensitivity (including drug allergy) which is deemed relevant to the trial as judged by the investigator
8. 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
9. Use of drugs which might reasonably influence the results of the trial based on the knowledge at the time of protocol preparation within 10 days prior to administration or during the trial
10. Participation in another trial with an investigational drug within four weeks prior to administration or during the trial
11. Alcohol abuse (more than 60 g/day for men and more than 40 g/day for women)
12. Drug abuse
13. Blood donation (more than 100 mL within four weeks prior to administration or during the trial)
14. Excessive physical activities (within one week prior to administration or during the trial)
15. Any laboratory value outside the reference range that is of clinical relevance
16. Inability to comply with dietary regimen of study centre
17. Planned surgeries within four weeks following the end-of study examination
18. Intake of medication, which influences the blood clotting, i.e., acetylsalicylic acid, coumarin etc. within 10 days prior to administration
19. Male subjects who do not agree to minimise the risk of female partners becoming pregnant from the first dosing day until the completion of the post study medical examination. Acceptable methods of contraception comprises barrier contraception and a medically accepted contraceptive method for the female partner (intra-uterine device with spermicide, hormonal contraceptive since at least two month)