To investigate the relative bioavailability of dabigatran with and without concomitant administration of diclofenac and the relative bioavailability of diclofenac with and without concomitant administration of dabigatran etexilate

Inclusion criteria:

1. Healthy males and females according to the following criteria: Based upon a complete medical history, including the physical examination, vital signs (blood pressure, pulse rate), 12-lead electrocardiogram, clinical laboratory tests
2. Age ≥18 and ≤55 years
3. Body mass index (BMI) ≥18.5 and BMI ≤29.9 kg/m2
4. Signed and dated written informed consent prior to admission to the study in accordance with GCP (Good Clinical Practice) and the local legislation

Exclusion criteria:

1. Clinically relevant gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
2. Relevant surgery of gastrointestinal tract
3. History of any bleeding disorder including history of gastrointestinal erosions and ulcer or acute blood coagulation defect
4. Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
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 objectives of 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 two months prior to administration or during the trial
11. Alcohol abuse (more than 60 g/day)
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. Subjects with abnormal thrombocyte counts and any relevant deviation in the assessment of platelet function (PFA test) must be excluded
17. Inability to comply with dietary regimen of study centre
18. Females of child bearing potential who are pregnant, breast feeding or who are either not surgically sterile or are sexually active and not using an acceptable form of contraception as either the oral contraceptives since at least two months and the double barrier method, i.e. intrauterine device with spermicide and condom for the male partner
19. Male subjects must agree to minimize the risk of female partners becoming pregnant from the first dosing day until 3 months after 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)
20. Planned surgeries within four weeks following the end-of study examination
21. Intake of medication, which influences the blood clotting, i.e., acetylsalicylic acid, cumarin etc.
22. The subject is able to understand and comply with protocol requirements, instructions and protocol-stated restrictions
23. Vulnerable subjects (e.g. persons kept in detention).