Clinical trial to evaluate the influence of multiple aspirin administration on PK and PD of co-administered drugs

Clinical trial to evaluate the influence of genotype of drug metabolizing enzyme or transporter and drug-drug interactions of aspirin co-administration on the pharmacokinetics / pharmacodynamics of clopidogrel and pharmacokinetics of digoxin in healthy volunteers

Inclusion Criteria:

• Healthy male subjects aged 20 - 45 years.
• A body weight in the range of 50 kg (inclusive) - 90 kg (exclusive) and a body mass index (BMI) in the range 18.5 kg/m2 (inclusive) - 27 kg/m2 (inclusive).
• Sufficient ability to understand the nature of the study and any hazards of participating in it. Provide written informed consent after being fully. informed about the study procedures.

Exclusion Criteria:

• Presence or history of hypersensitivity or allergic reactions to drugs including investigational product (clopidogrel, digoxin or aspirin)
• Clinically relevant abnormal medical history that could interfere with the objectives of the study.
• A subject with history of gastrointestinal disease or surgery (except simple appendectomy or repair of hernia), which can influence the absorption of the study drug.
• A subject whose lab test results are as follows; Platelet count or PT, aPTT < 0.9 x lower limit of reference range of > 1.1 x upper limit of reference range.
• A subject whose SBP is over 160 mmHg or below 90 mmHg and DBP is over 100 mmHg or below 50 mmHg.
• Clinically significant abnormal findings of ECG during screening test.
• Presence or history of drug abuse or positive result in urine drug screening test.
• Participation in other clinical trial within 2 months before first dose.
• Use of CYP inducer (ex. rifampin) within 4 weeks before first dose.
• Use of a prescription medicine, herbal medicine within 2 weeks or over-the-counter medication or vitamin substances within 1 week before first dose.
• Use of grapefruit juice within 1 week before first dose.
• Blood donation during 2 months or apheresis during 1 month before the study.
• Use of alcohol over 21 units/weeks
• Smoking of more than 10 cigarettes/days within 3 months before first dose.
• Subject judged not eligible for study participation by investigator.